1. cause to be bitter or resentful - These injustices embittered her even more • Syn: embitter, acerbate • Derivationally related forms: acerbity (for: acerbate), embitterment (for: embitter) • Cause: resent • Verb Frames: - Something ----s somebody 2. add poison to - Her husband poisoned her drink in order to kill her • Syn: poison • Derivationally related forms: poison (for: poison), poisoning (for: poison) • Hypernyms: change, alter, modify • Verb Frames: - Somebody ----s something