Plural Forms Of Nouns
Table of Contents
When a word denotes only one object, it is singular in number. When it denotes more than one object, it is plural in number.
Rule 1
The general rule for forming plurals is to add -s to the word in the singular number:
| SINGULAR | PLURAL |
|---|---|
| dog | dogs |
| book | books |
| hand | hands |
| house | houses |
| town | towns |
| village | villages |
Exceptions: If the noun ends in -ss, -sh, -ch, -x or -z, the plural is formed by adding -es to the singular:
| SINGULAR | PLURAL |
|---|---|
| class | classes |
| glass | glasses |
| bench | benches |
| brush | brushes |
| box | boxes |
| fox | foxes |
| topaz | topazes |
Rule 2
If the last letter of the noun is -y and if -y is preceded by a consonant, the plural is formed by changing -y into -ies:
| SINGULAR | PLURAL |
|---|---|
| fly | flies |
| sky | skies |
| lady | ladies |
| family | families |
| city | cities |
But if the final -y is preceded by a vowel, the plural is formed by adding only -s to the word in the singular number:
| SINGULAR | PLURAL |
|---|---|
| day | days |
| tray | trays |
| key | keys |
| monkey | monkeys |
| boy | boys |
| toy | toys |
Rule 3
If the last letter of a noun is -o and if -o is preceded by a consonant, the plural is usually formed by adding -es to the singular:
| SINGULAR | PLURAL |
|---|---|
| hero | heroes |
| buffalo | buffaloes |
| echo | echoes |
| mango | mangoes |
| mosquito | mosquitoes |
| potato | potatoes |
a. Some exceptions: cantos, mementos, solos, pianos, provisos.
b. The plural of nouns ending in -oo, -io, -eo and -yo is formed by adding -s and not -es:
| SINGULAR | PLURAL |
|---|---|
| bamboo | bamboos |
| cuckoo | cuckoos |
| portfolio | portfolios |
| cameo | cameos |
| embryo | embryos |
Rule 4
If a noun ends in -f or -fe, the plural is generally formed by changing -f or -fe into -ves:
| SINGULAR | PLURAL |
|---|---|
| life | lives |
| wife | wives |
| calf | calves |
| knife | knives |
| leaf | leaves |
| wolf | wolves |
| thief | thieves |
Exceptions: The plural of nouns ending in -ief, -ff, -oof, -rf, -eef, is formed by adding only -s to the word in the singular number:
| SINGULAR | PLURAL |
|---|---|
| chief | chiefs |
| cliff | cliffs |
| proof | proofs |
| dwarf | dwarfs |
| reef | reefs |
Rule 5
There are eight nouns which form their plurals by changing the inside vowels(s):
| SINGULAR | PLURAL |
|---|---|
| man | men |
| woman | women |
| foot | feet |
| tooth | teeth |
| goose | geese |
| mouse | mice |
| louse | lice |
| dormouse | dormice |
Rule 6
There are some nouns which form their plurals by adding -en.
| SINGULAR | PLURAL |
|---|---|
| child | children |
| ox | oxen |
| brother | brethren (brothers) |
Rule 7
In the case of compound nouns, plurals are fomrned by adding -s to the principal word:
| SINGULAR | PLURAL |
|---|---|
| father-in-law | fathers-in-law |
| daughter-in-law | daughters-in-law |
| passer-by | passers-by |
| step-brother | step-brothers |
| commander-in-chief | commanders-in-chief |
Rule 8: Some nouns are singular in form but plural in meaning: cattle, people, swine, vermin, gentry, nobility, aristocracy, clergy, folk, etc.
The Kaoravas wanted to steal the cattle of King Virata. Virtuous people get peace in life.
Rule 9: Some nouns are plural in form but singular in meaning: mathematics, physics, politics, economics, whereabouts, gallows, ethics, etc.
Rule 10
Some nouns have no plural form: alphabet, furniture, poetry, scenery, offspring, luggage, expenditure, issue (in the sense of child or children).
Rule 11
a. Some nouns have only plural form: alms, annals, assets, bellows, riches. b. Some nouns have plural form but are used in the singular: means, news, innings.
Rule 12
Some nouns have double plural forms but with different meanings:
fish (many fish of the same variety) fishes (many fishes of different varieties) people (many people live in Calcutta) peoples (nations – many peoples of the world) System of Making Latin Plurals
For Latin words ending in -um in the singular number, the plural is formed by replacing -um with -a.
| SINGULAR | PLURAL |
|---|---|
| vitum | vita |
| stratum | strata |
| datum | data |
| memorandum | memoranda |
| microvitum | microvita |
| medium | media |
| cash memo | cash mema |
| quantum | quanta |
| corrigendum | corrigenda |
| propagandum | propaganda |
| agendum | agenda |
| desideratum | desiderata |
For Latin words ending in -us in the singular number, the plural is formed by replacing -us with -i:
| SINGULAR | PLURAL |
|---|---|
| radius | radii |
| lotus | loti |
| cactus | cacti |
| plexus | plexi |
| genius | genii |
| alumnus | alumni |