IELTS whilst Definition While; during the time that; also used to express contrast. Example "Whilst I was cooking, the phone rang." Sign in to save IELTS PDF — $25 ← whet whim → Study tips featuring "whilst" Boost Your IELTS Writing With Precise Vocabulary Related words TOEFL brighten IELTS startle GRE abide SAT abnormal TOEFL aboard TOEFL abolition IELTS upward TOEFL abort IELTS abortion SAT abrupt SAT absence TOEFL absent