Vocabulary Building / Word Roots

Prefixes That Help and Prefixes That Mislead

Part of the full libraryOpens January 2, 2027 · $97 for a year
What’s included
Thomas MeliSAT instructor
word rootA word part with an old meaning shared by a family of words, such as cred, believe, in credible and credence.

You’ll leave with these skills

  1. Check whether im- means not or in
  2. Tell ante- from anti-
  3. Tell autonomous from autocratic

This lesson is part of the full library

202 lessons that teach every skill the SAT tests
  • 66Math
  • 40Reading
  • 24Grammar
  • 10 full-length practice tests to build test-day stamina and confidence
  • A Desmos simulator to solve math questions faster
  • A step-by-step guide to every practice test question
  • The Bluebook Simulator, so test day feels familiar
  • A drawing for every key term, so new ideas make sense at a glance

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