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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 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

What’s the Plural of Thief?

The plural of thief is thieves. Thief ends in a sibilant (f), which typically take on -ves as a plural noun form.

What’s the Plural of Syllabus?

Syllabus comes from Latin, which has as its original plural noun form syllabi. Over time syllabuses has also come to be accepted as a plural