IELTS cautious Definition Careful to avoid potential problems or dangers. Example "She was cautious about investing in the new startup." Sign in to save IELTS PDF — $25 ← caution cautiously → Study tips featuring "cautious" 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