TOEFL IELTS serene Definition Calm, peaceful, and untroubled; undisturbed. 中文 平静、安宁且不受干扰的。 Example "The lake lay serene under the morning sun." Sign in to save TOEFL PDF — $25 IELTS PDF — $25 ← serendipity serenity → Study tips featuring "serene" TOEFL Academic Vocabulary: Study by Topic Boost Your IELTS Writing With Precise Vocabulary Related words TOEFL brighten GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze