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plural nouns
English nouns that are countable can be plural or singular (mention one or more than one of that thing, person object). Nouns will look different (i.e., use other spelling) based on whether they’re being used as a singular or plural.
Regular nouns will simply add “s” or “es”. Irregular nouns end in something other than “s” or “es”. While this sounds simple enough, because of the amount of nouns there are in English, and the number of irregular noun forms that exist, learning the correct spelling can be difficult.
Discover our archive of guides covering all of English’s irregular noun forms, like the plural of crisis, or diagnosis. Also, the plurals of animals like moose, sheep and deer. Find the answers to your questions on plural nouns, and send us a message if there’s a question you have which hasn’t yet been answered!
What’s the Plural of Focus?
Focuses is now much more commonly used as the plural of focus. Foci is also correct.
What’s the Plural of Stratum?
Both strata and stratums are accepted plurals of the Latin noun, stratum.
What’s the Plural of Symposium?
Symposium comes from Latin, and so its original Latin plural form is symposia. Over time and frequent misuse, symposiums has also become accepted as a plural.
What’s the Plural of Tuna?
For the most part, the plural of tuna is tuna. Sometimes tunas is an accepted plural.
What’s the Plural of Vortex?
Both vortices and vortexes are correct plurals of vortex, meaning “whirlpool, eddying mass.” The original plural noun form is vortices (for Latin purists).
What’s the Plural of Virus?
The plural of virus is viruses. Virus forewent its Latin plural noun form, or simply never had one.