100 Singular and Plural Words in English for Class 1 to 5 Students

If you’ve ever watched a six-year-old pause mid-sentence, unsure whether it’s “two mouses” or “two mice,” you already know why 100 singular and plural words in English is one of those topics every parent and teacher ends up searching for at some point. It looks simple on the surface just add an “s,” right? Except English doesn’t quite work that way, and the exceptions are exactly where kids (and honestly, a lot of adults) get stuck.

This guide walks through a full list of 100 singular and plural words in English, sorted by the rule each one follows, with plain explanations and examples along the way. If you came here because you needed someone to list 100 singular English nouns with their plural forms, or you’re building a worksheet and just want the words laid out clearly, this should cover what you need rules, exceptions, practice questions, all of it.

☰ Table of Contents

Why This Topic Trips Kids Up More Than You'd Expect

Here’s the thing about plurals they show up everywhere. A child doesn’t just need this for a grammar test. Get the plural wrong and suddenly the whole sentence sounds off: “The dogs is running” instead of “The dogs are running.” Reading gets slower too, because a kid who stumbles on “leaves” (wondering why it’s not “leafs”) loses their place and has to re-read the line.

So really, this isn’t a small grammar footnote. It’s one of those foundational pieces that quietly affects how well a child reads, writes, and speaks — which is probably why it keeps coming up in Class 1 through Class 5 curriculums, again and again, with new exceptions added each year.

What Even Is a Singular or Plural Noun?

Nothing complicated here. A singular noun is one thing — one dog, one chair, one idea. A plural noun is more than one of that thing.

Singular: one book
Plural: two books

That part’s easy. Where it gets interesting is everything after the basic “-s” rule because English borrowed rules from Old English, French, Latin, and Greek over the centuries, and it never quite cleaned up after itself. That’s why “cat” becomes “cats” but “child” becomes “children” and not “childs.” Below, we’ll go through each pattern one at a time.

Rule 1: Most Nouns — Just Add "-s"

Let’s start with the easy one, because this covers the vast majority of nouns a young learner will run into.

Singular	Plural
cat	cats
dog	dogs
book	books
pen	pens
chair	chairs
table	tables
ball	balls
girl	girls
boy	boys
car	cars
tree	trees
flower	flowers
bag	bags
cup	cups
hat	hats
shoe	shoes
apple	apples
banana	bananas
pencil	pencils
eraser	erasers
kite	kites
doll	dolls
star	stars
bird	birds
cow	cows
goat	goats
lamp	lamps
house	houses
road	roads
river	rivers

For example: “I have three books and two pencils in my bag.” Simple as that.

If you’re teaching a child who’s just starting out with English, honestly, stop here for a while. Don’t rush into the exceptions below until this feels automatic. Kids who get thrown irregular words too early tend to second-guess even the easy ones.

Rule 2: Words Ending in -s, -ss, -x, -z, -ch, -sh — Add "-es"

Try saying “boxs” out loud. Feels wrong, doesn’t it? That’s basically why this rule exists when a word already ends in a hissing or buzzing sound, adding just “s” is nearly impossible to pronounce cleanly, so English tacks on an extra syllable instead.

Singular	Plural
bus	buses
class	classes
box	boxes
fox	foxes
glass	glasses
brush	brushes
watch	watches
church	churches
dish	dishes
wish	wishes
match	matches
bench	benches
dress	dresses
kiss	kisses
quiz	quizzes

“The buses stopped near the churches on Main Street” — say that sentence out loud and you’ll notice how naturally the “-es” rolls off the tongue compared to just “s.”

One word worth pointing out separately: quiz. It doubles the “z” before adding “-es” — quizzes, not quizes. Small thing, but it’s the kind of word that shows up in spelling tests specifically because it’s a little unusual.

Rule 3: Consonant + "Y" — Change to "ies"

This is probably the rule kids mix up the most, mainly because they forget there’s a condition attached to it.

Singular	Plural
baby	babies
lady	ladies
city	cities
story	stories
family	families
puppy	puppies
party	parties
country	countries
fairy	fairies
berry	berries

“The babies in both families loved hearing bedtime stories” — three -ies plurals in one sentence, if you want a quick way to drill this.

Now here’s the part that actually matters: this rule only applies when the letter before the “y” is a consonant. If it’s a vowel instead — like in “boy,” “toy,” “day,” or “key” — you just add “s.” No change to the “y” at all. So it’s boys, toys, days, keys. I’d honestly treat this vowel-versus-consonant distinction as its own separate mini-lesson, because kids apply “-ies” to everything ending in “y” if you don’t slow down here.

Rule 4: Words Ending in "-f" or "-fe" — Change to "-ves"

These don’t follow any pattern you can really explain with logic — they’re just a list you learn.

Singular	Plural
leaf	leaves
knife	knives
wife	wives
life	lives
wolf	wolves
shelf	shelves
calf	calves
half	halves
loaf	loaves
thief	thieves

“The wolves hid behind the fallen leaves in the forest” — a good sentence for practicing this group since it uses two of them together.

But — and this trips people up constantly — not every “-f” word does this. “Roof” becomes “roofs,” not “rooves.” Same with “chief” (chiefs) and “cliff” (cliffs). So don’t teach this as a blanket rule. It’s really more like: here are ten specific words that behave this way, memorize them as a set.

Rule 5: Irregular Plurals

These are the ones that just… change. No rule, no pattern — you either know them or you don’t, and most kids learn them through repetition rather than logic.

Singular	Plural
man	men
woman	women
child	children
tooth	teeth
foot	feet
mouse	mice
goose	geese
person	people
ox	oxen
louse	lice
die	dice
penny	pence
brother	brethren
policeman	policemen
grandchild	grandchildren

“The children brushed their teeth before the women left for work” — that sentence alone covers three of the trickiest irregular plurals in the list.

Interesting side note if you’re teaching older kids: “brethren” is actually a second, older plural of “brother” — you’ll mostly see it in religious or ceremonial writing rather than everyday speech. “Brothers” is what you’d use normally. It’s a nice example to show that English sometimes just… keeps two versions of a word around instead of picking one.

Rule 6: Words That Don't Change at All

This group confuses kids in the opposite way — there’s no visible difference between one and many, so the only way to know is from context.

Singular	Plural
sheep	sheep
deer	deer
fish	fish
series	series
species	species
aircraft	aircraft
salmon	salmon
trout	trout
moose	moose
buffalo	buffalo

“We saw ten sheep and two deer near the farm” — notice neither word changed even though we’re clearly talking about more than one.

Quick note on “fish” specifically, since it comes up a lot: it stays “fish” in almost every everyday sentence, but if you’re talking about different species of fish, “fishes” is technically correct too — as in “the fishes of the Ganges.” Not something a Class 1 student needs, but worth knowing if you’re teaching Class 5 and someone asks.

Rule 7: Words Borrowed from Latin and Greek

These are the words that came into English from Latin or Greek and just kept their original plural form instead of adopting the usual English pattern. You’ll see most of these show up first in science class rather than a basic grammar worksheet.

Singular	Plural
cactus	cacti
fungus	fungi
nucleus	nuclei
syllabus	syllabi
analysis	analyses
crisis	crises
thesis	theses
phenomenon	phenomena
criterion	criteria
curriculum	curricula

“Our teacher explained the new curricula and shared the criteria for the exam” — this is more of a Class 4–5 sentence than something you’d use with a younger child, and that’s roughly where this rule fits in the curriculum too.

Worth mentioning: some of these are drifting toward regular English plurals in casual use — “syllabuses” is now accepted alongside “syllabi,” for instance. In exams and formal writing though, stick with the original form.

The Full List, All 100 Words in One Place

If what you actually needed was just a list of 100 common English words showing singular vs plural without reading through all the explanations above, here it is, grouped the same way:

Regular (-s): cat – cats, dog – dogs, book – books, pen – pens, chair – chairs, table – tables, ball – balls, girl- girls, boy – boys, car – cars, tree – trees, flower – flowers, bag – bags, cup – cups, hat – hats, shoe – shoes, apple – apples, banana – bananas, pencil – pencils, eraser – erasers, kite – kites, doll – dolls, star – stars, bird-birds, cow – cows, goat – goats, lamp – lamps, house – houses, road – roads, river – rivers

Add -es: bus – buses, class – classes, box – boxes, fox – foxes, glass – glasses, brush – brushes, watch – watches, church – churches, dish – dishes, wish – wishes, match – matches, bench – benches, dress – dresses, kiss – kisses, quiz – quizzes

Y to ies: baby – babies, lady – ladies, city – cities, story – stories, family – families, puppy – puppies, party – parties, country – countries, fairy – fairies, berry – berries

F/fe to ves: leaf – leaves, knife – knives, wife – wives, life – lives, wolf – wolves, shelf – shelves, calf – calves, half – halves, loaf – loaves, thief – thieves

Irregular: man/men, woman – women, child – children, tooth – teeth, foot – feet, mouse – mice, goose – geese, person – people, ox – oxen, louse – lice, die – dice, penny – pence, brother – brethren, policeman – policemen, grandchild – grandchildren

No change: sheep – sheep, deer – deer, fish – fish, series – series, species – species, aircraft – aircraft, salmon – salmon, trout – trout, moose – moose, buffalo – buffalo

Foreign origin: cactus – cacti, fungus – fungi, nucleus – nuclei, syllabus – syllabi, analysis – analyses, crisis – crises, thesis – theses, phenomenon – phenomena, criterion – criteria, curriculum – curricula

So if someone asked you to give me 100 singular and plural words in English, that’s your answer sorted, spelled out, ready to copy into a worksheet if that’s what you need it for.

A Cheat Sheet, If You Just Want the Rules at a Glance

I find these easier to remember as a quick table rather than reading through paragraphs each time, so here’s the short version:

Rule	When It Applies	Example
Add -s	Most nouns	cat → cats
Add -es	Ends in s, ss, x, z, ch, sh	box → boxes
y → ies	Ends in consonant + y	baby → babies
Keep y, add -s	Ends in vowel + y	boy → boys
f/fe → ves	Specific memorized list	leaf → leaves
Irregular	No fixed rule	child → children
No change	Invariant nouns	sheep → sheep
Foreign plural	Latin/Greek origin	cactus → cacti

While We're At It — Countable vs. Uncountable Nouns

This usually comes up right around the time a child masters regular plurals and starts trying to apply “-s” to everything. Words like “water,” “rice,” “furniture,” and “information” never take a plural at all — you wouldn’t say “waters” or “furnitures.” These are called uncountable nouns, and instead of counting them directly, you measure them: “a glass of water,” “some rice,” “a piece of furniture.” Not the main topic here, but it’s worth mentioning because it’s usually the very next mistake kids make once plurals start feeling automatic.

Mistakes You'll Probably See and How to Fix Them

A few patterns show up again and again once you start correcting a child’s grammar homework:

Regularizing irregular nouns : “childs” instead of “children,” “mans” instead of “men.” Very common, very fixable with repetition.

Forgetting the f-to-ves switch : “leafs” instead of “leaves.” Usually fixes itself once the word list above becomes familiar.

Adding “s” to invariant nouns : “sheeps,” or always defaulting to “fishes” even when talking about one type of fish.

Mixing up vowel-y and consonant-y : “boies” instead of “boys.” This one’s almost always a sign the vowel/consonant rule wasn’t taught clearly.

Verb agreement slipping : “The dogs is running” instead of “are running.” Not technically a plural-noun mistake, but it’s closely tied and worth correcting at the same time.

Pluralizing uncountable nouns : “informations,” “furnitures.” Neither exists in standard English.

Guessing on foreign plurals : writing “cactuses” in a formal essay when “cacti” was expected, or the reverse in casual conversation.

None of these are unusual, by the way. Every child makes some version of these mistakes on the way to getting it right it’s part of the process, not a sign something’s wrong.

Quick Practice — Try These Before Checking the Answers

child → ?
leaf → ?
city → ?
sheep → ?
box → ?
mouse → ?
baby → ?
wolf → ?
cactus → ?
boy → ?

Answers: children, leaves, cities, sheep, boxes, mice, babies, wolves, cacti, boys.

If your child got 8 or more right without looking back at the tables, they’ve genuinely got this down — time to move on to sentence-building rather than more list memorization.

A Few Ways to Practice This at Home

Flashcards : Singular on one side, plural on the other. Five minutes a day beats one long session on a Sunday.

Two-sentence rule : Ask your child to use both forms of a word in separate sentences. Forces them to actually think about the difference rather than just recite it.

Story time call-outs : While reading together, pause and ask “one or many?” whenever a noun comes up.

Sorting games : Hand over a mixed list and have them sort words into the seven groups from this article.

Worksheets : Printable ones work well for the trickier groups especially, since the -es and -ves rules need more repetition than the basic “-s” rule.

Conclusion

There’s no shortcut to memorizing 100 singular and plural words in English — but there is a smarter order to learn them in. Start with the regular “-s” rule until it’s second nature, then work through -es, y-to-ies, and f-to-ves, and save the irregular and foreign-origin words for last, since those genuinely just take repetition. Do a little at a time, revisit the list often, and it stops feeling like a grammar rule and starts feeling like something the child just… knows.

Frequently Asked Questions

What are the 100 singular and plural words in English?

They’re a set of common nouns grouped by grammar pattern — regular (-s), -es, y-to-ies, f-to-ves, irregular, no-change, and foreign-origin plurals — covering the words most frequently taught across Class 1 to 5.

What's the easiest way to teach plurals to a Class 1 student?

Start with just the “-s” rule and stay there for a while before moving on. Rushing into irregular words too early usually causes more confusion than it solves.

Are there English nouns with no plural form at all?

Yes — words like “information,” “furniture,” and “advice” are uncountable and simply don’t have a plural version.

Why do words like "sheep" and "fish" stay the same in plural?

They’re called invariant nouns. Historically their plural form never changed, and English never bothered adding an “-s” the way it did with most other words.

Is "cactuses" wrong, or is "cacti" the only correct form?

Both are accepted these days. “Cacti” is the traditional form and reads better in formal writing, but “cactuses” is common enough in everyday speech that it’s not incorrect.

How do I know if a word ending in "y" needs "-ies" or just "-s"?

Look at the letter right before the “y.” Consonant before it — change to “-ies” (baby → babies). Vowel before it — just add “-s” (boy → boys).

Can I get this as a printable worksheet?

Yes — everything above is structured so you can copy it directly into a printable sheet or PDF for classroom or home use.