Vastly Definition & Meaning

vastly
adverb
  1. to an exceedingly great extent or degree; "He had vastly overestimated his resources"; "was immensely more important to the project as a scientist than as an administrator"

Usage tips for "vastly"

Understanding the precise definition of a word helps you use it with confidence. When using "vastly" in your writing, consider whether you need the word itself or one of its synonyms — subtle differences in meaning can change the tone of a sentence. If you're writing poetry or song lyrics, check the rhymes for vastly to find words that pair well.

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