Plural of Irregular Nouns
How to form the plural words
Generally, the majority of English nouns form their plural by adding an -s (pencils, pens, books, papers) or by adding -es (boxes, foxes, classes, glasses)
The plural of irregular nouns are nouns that do not become plural by simply adding -s or -es.
Below is a simple table, outlining the main irregular nouns in the plural form.
Sadly, there is no other way to learn these, apart from learning them by heart.
Irregular Noun Singular Form | Irregular Noun Plural Form |
aircraft | aircraft |
analysis | analyses |
appendix | appendices |
axis | axes |
bacterium | bacteria |
basis | bases |
bison | bison |
bureau | bureaux |
cactus | cacti |
child | children |
crisis | crises |
deer | deer |
die | dice |
dwarf | dwarves |
fish | fish |
foot | feet |
formula | formulae |
fungus | fungi |
goose | geese |
half | halves |
leaf | leaves |
loaf | loaves |
louse | lice |
man | men |
medium | media |
mouse | mice |
oasis | oases |
ox | oxen |
parenthesis | parentheses |
person | people |
phenomenon | phenomena |
quiz | quizzes |
scarf | scarves |
series | series |
self | selves |
sheep | sheep |
species | species |
tableau | tableaux |
thief | thieves |
wife | wives |
wolf | wolves |
women | women |
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