Exceptions of Plural Formation


 1) Plural formation of a few nouns is made by changing the vowel inside.


     Man, men; woman, women;

      Louse, lice; mouse, mice;

      Foot, feet; tooth, teeth.


2) Some nouns do not change, means they have the same singular as

well as plural form.


    Sheep, deer (one sheep, four sheep), pair, dozen, hundred, thousand.

     I bought three dozen bananas.


3) Some instruments with two parts, some dresses, diseases, games are used as plural; as,

 scissors, spectacles, trousers, measles, billiards, assets, news, proceeds.

 These are plural in form but the meaning is singular.


4) Sometimes the nouns and names of sciences used as singular; as,

    News, Innings, Mathematics, Physics, Politics, Ethics.


5) Some Collective Nouns having singular form are used as plurals; as,

      people, cattle.


 6) Plurals of some Latin or Greek originating nouns follow the rules of Latin or Greek; as, radius,                                                                                                                                                                                 radii; phenomenon, phenomena; axis, axes; basis, bases.

But some of those nouns follow English rules to make plural; as, plural of formula is formulas,                                                                                                                                                                                  but mostly plural of formula is used as formulae.


Some nouns have two different plurals having two different meanings; as

Index, indexes – is used as plural form in books.

Index, indices – is used as plural form in mathematics.

Brother, brothers – is used for sons of the same parent.

Brother, brothers – is used for members of a society or a community.


7) Some compound nouns are connected into their plural forms by making last word plural; as,

travel agent, travel agents; step son, step sons.

Some compound nouns have their plurals by adding s to the main word; as,

Son-in-law, sons-in-law.

Man-of-war, men-of-war.

But some compound nouns which are used as one word those have plurals by adding s to the                                                                                             singular; as,

Spoonful, spoonfuls;

Handful, handfuls.


8) Some initials also make their plural by adding s; as,

MP, MPs; UFO, UFOs (unidentified flying objects)


9) Uncountable nouns are always in singular form; as,

 In singular form some nouns have two meanings but one meaning of plural form; as,

People – nation, men and women.

Peoples – nations.


10) In plural form some nouns have one meaning but two meanings of plural forms; as,

Effect – result.

Effects – results, property


See also-.Plural Formation of Noun, Number.

Hi, I am Madhuri Kherde, an educationist, ex-principal of a secondary school in Mumbai, and founder of EnglishLamp.com. I have been teaching English and Mathematics for the last thirty-four years. I like to share my knowledge and experience with others. So I hope you enjoy my posts on this website.