SAT GRE TOEFL placid Definition Calm and peaceful, not easily disturbed. Example "The lake was placid, reflecting the mountains like a mirror." Sign in to save SAT PDF — $25 GRE PDF — $25 TOEFL PDF — $25 ← placebo plagiarism → Study tips featuring "placid" TOEFL Academic Vocabulary: Study by Topic How Context Clues Save You on the SAT Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal