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Definition of ensure

ensure

/ɪnˈʃʊr/
en · sure
Past Simple:ensured
•
Past Participle:ensured
•
Present Participle:ensuring
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ensure Lexical Profile

ensure Game Scores & Validity

• verb

1

To make certain that something shall occur or be the case.

Example

"Please review the itinerary carefully to ensure that all flight connections are accurate."

2

To make certain of obtaining or providing something for someone.

Example

"Her groundbreaking research ensured her a prestigious fellowship at the university."

Synonyms
View all synonyms for ensure
Antonyms
View all antonyms for ensure

Word Nuance & Usage

'Ensure' (to make certain that something happens) is frequently confused with 'insure' (to arrange for financial compensation in case of loss or damage) and 'assure' (to tell someone confidently that something is true so as to dispel their doubts).

• Rhymes for ensure

• Nearby Words

ensue
ensuing
ensuite
ensure
entail
entangle
entanglement

Word Origin & Etymology

Borrowed from Anglo-French 'ensurer', formed from the prefix 'en-' (to make) and Old French 'seur' (safe or certain), ultimately deriving from Latin 'securus' (free from care).

Cite this Entry

Wordmom. (2026). Definition of Ensure. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ensure
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