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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 Addendum?

Addendum has two plural noun forms: both addenda and addendums are correct, though the former is the original Latinate pl. n. form.

What’s the Plural of Half?

The plural of half (rhymes with calf) is halves. Half is a sibilant, and like calf, loaf, and wolf, each uses -ves to denote a

What’s the Plural of Curriculum?

Curriculum is a Latin noun, and has two accepted plural noun forms: curriculums and curricula. Both are correct; though curricula is the original Latin pl.

What’s the Plural of Elf?

Is there an elf on your shelf? If there were more than one, there are elves on your shelf (or shelves, if you have more