Singular-Plural-2 (Rules of Making Plural)

Make Plural Rules-1-Regular (PDF)

Make Plural Rules-2-Irregular-(PDF)

Irregular Plural

Rule:1       a = e                  

·        gentleman  =       gentlemen

·        man            =       men

·        policeman  =       policemen

·        postman     =       postmen

·        woman       =       women

Rule:2       en

·        child          =       children

·        ox              =       oxen

·        brother      =       brethren

Rule:3       oo = ee

·        foot           =       feet

·        goose        =       geese

·        tooth         =       teeth

    Exceptions:
·        book         =       books

·        hook         =       hooks

·        roof          =       roofs

·        room        =       rooms

Rule:4       …ouse  = …ice

·        louse        =       lice

·        mouse      =       mice

     Others
·        blouse      =       blouses
·         house      =       houses

Rule:5       …um/on  = …a

·        automaton =       automata

·        bacterium  =       bacteria

·        criterion     =       criteria

·        curriculum =       curricula

·        datum        =       data

·        erratum     =       errata

·        medium    =       media

·        ovum        =       ova

·        phenomenon=    phenomena

·        phylum       =       phyla

Rule:6       …a  = …ae

·        alga          =       algae      

·        alumna     =       alumnae

·        amoeba    =       amoebae

·        antenna    =       antennae

·        formula    =       formulae

·        larva         =       larvae

·        nebula      =       nebulae

·        vertebra    =       vertebrae

·        vita           =       vitae

Rule:7       …us  = …i

·        alumnus    =       alumni

·        bacillus     =       bacilli

·        cactus       =       cacti

·        focus        =       foci

·        fungus      =       fungi

·        nucleus     =       nuclei

·        octopus     =       octopi

·        radius        =       radii

·        stimulus    =       stimuli

·        syllabus     =       syllabi

·        terminus    =       termini

Rule:8       …us  = …a

·        corpus       =       corpora

·        genus        =       genera

Rule:9       …i(s)  = …e(s)

·        analysis     =       analyses

·        axis           =       axes

·         basis        =       bases

·        crisis         =       crises 

·        diagnosis   =       diagnoses

·        ellipsis      =       ellipses

·        hypothesis =       hypotheses

·        oasis           =       oases

·        parenthesis=      parentheses

·        synopsis    =       synopses

·        thesis         =       theses

Rule:10     …e/ix  = …ices

·        apex           =       apices

·        appendix    =       appendices

·        codex         =       codices

·        index         =       indices

·        matrix        =       matrices

·        vortex        =       vortices

Rule:11     …eau  = …eaux

·        beau          =       beaux

·        bureau       =       bureaux

·        chateau      =       chateaux

·        plateau      =       plateau

·        tableau      =       tableaux

Rule:12     Singular-Plural same

·        aircraft       =       aircraft

·        cod            =       cod

·        deer           =       deer

·        fish            =       fish

·        means        =       means

·        offspring    =       offspring

·        series         =       series

·        sheep        =       sheep

·        species      =       species

Rule:13      Some other Italian Words in plural:

·        concerto    =       concerti

·        graffito      =       graffiti

·        libretto       =       libretti

·        tempo        =       tempi

·        virtuoso     =       virtuosi

Rule:13      Some Hebrew Words in Plural:

·        Cherub     =       cherubim
·        Seraph     =       seraphim

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Best of Luck !