TOEFL IELTS ensure Definition To make certain that something will occur or be the case. Example "Double-check your answers to ensure accuracy." Sign in to save TOEFL Quiz → IELTS Quiz → ← ensue entail → Study tips featuring "ensure" Audit Your Own Writing to Find Gaps TOEFL Academic Vocabulary: Study by Topic Boost Your IELTS Writing With Precise Vocabulary Related words TOEFL swiftness GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze