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CPS HSAT Vocabulary · Tier 3

expert

noun

Definition

a person with great knowledge

In a sentence

She is an expert in astronomy.

Similar words

  • specialist
  • authority

Why this word matters: expert appears in academic reading at the 8th-grade level and is exactly the type of word that shows up on the CPS HSAT Reading section. Practice it in context with our spaced-repetition system at vocabulary.