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Knowledge Base

Explore the breadths and depths of Grammarflex’s knowledge base, containing resources and comprehensive guides on pretty much everything you could want to know related to English grammar and writing.

Learn all about the main parts of speech, which (in case you forgot) comprises of verbs, nouns, adjectives, pronouns, adverbs, conjunctions, prepositions and interjections. Beyond the fundamentals of English grammar, you’ll find guide on writing mechanics and style, literary devices amd more. 

What’s the Plural of Hippopotamus?

The short answer is that both hippopotamuses and hippopotami are correct plurals for this barrel-bodied and rotund mammal: the hippopotamus.

What’s the Plural of Shrimp?

Either shrimp or shrimps are accepted as the plural of these marine crustaceans and decapods. Shrimp without the -s is more commonly used as the

Irregular Plural Nouns

A list of all irregular plural noun form in the English language, for you convenience and ease of reference.