What does the word overdo mean?

Usage examples for overdo

  1. " The fellow must not overdo it," he muttered. – Danger! and Other Stories by Arthur Conan Doyle
  2. She did not overdo it by shaking hands, but she made places for the ladies, smiling cordially; and Mrs. Deering made Miss Gage take the seat between them. – An Open-Eyed Conspiracy--An Idyl of Saratoga by William Dean Howells
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