Here are a few examples of irregular plural nouns:
Words such as offspring, species, deer, moose, trout, salmon and sheep are spelled and pronounced the same way whether singular or plural.
moose, fish, deer
The plural form of "axe" is "axes."
It's spelled cacti. The plural form of cactus is like the plurals for octopus and pegasus (e.g. octopi and pegasi). These particular words are spelled in exactly the same way as their Latin root words would be, so the us is changed to i.
The plural of cyclops is cyclops.The plural form of cyclops is cyclopsor cyclopes.
Its plural can be spelled two ways: flamingos and flamingoes... Just like 'go' and 'goes'
Vert is the masculine form. Verte is feminine, and vertes is plural.
A single scarf is simply spelled scarf. The plural form is scarves.
Some plural words that end in "n" include children, oxen, and men.
The plural form of "axe" is "axes."
The plural form of the noun company is spelled companies.
Normal words do not form plurals with apostrophes. The plural is spelled "advantages" and the adjective is "advantageous".
No, crisis is the singular form; the plural form is crises.
That is the correct spelling of the plural of "octopus", which is "octopi".(not all -us words form the -i plural in English, e.g. fungi but hippopotamuses)
The noun form for the number 40 is spelled forty. The plural form is forties.
It's spelled cacti. The plural form of cactus is like the plurals for octopus and pegasus (e.g. octopi and pegasi). These particular words are spelled in exactly the same way as their Latin root words would be, so the us is changed to i.
Pictures
Elliptical is an adjective. English adjectives have no plural form.
The plural of "necessary" is spelled "necessaries."