SAT GRE TOEFL IELTS tranquil Definition Calm, peaceful, and free from disturbance. Example "The lake was tranquil at dawn, reflecting the soft pink sky." Sign in to save SAT PDF — $25 GRE PDF — $25 TOEFL PDF — $25 IELTS PDF — $25 ← trample tranquility → Study tips featuring "tranquil" TOEFL Academic Vocabulary: Study by Topic How Context Clues Save You on the SAT Boost Your IELTS Writing With Precise Vocabulary 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