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Definitions

assurance

[uh-shoor-uhns, -shur-] / əˈʃʊər əns, -ˈʃɜr- /
NOUN
statement to relieve doubt
Synonyms
STRONGEST
affirmation assertion guarantee pledge promise security support word
STRONG
declaration insurance oath profession vow warrant warranty
WEAK
lock on rain or shine sure thing word of honor
Antonyms
STRONGEST
denial
STRONG
breach of promise
NOUN
confidence
Synonyms
STRONGEST
certainty security
STRONG
aplomb assuredness boldness bravery certitude conviction coolness courage faith firmness poise positiveness self-confidence self-reliance sureness surety trust
WEAK
aggressiveness arrogance audacity effrontery impudence nerve presumption temerity
Antonyms
STRONGEST
uncertainty
STRONG
caution cowardice diffidence disbelief distrust fear humility meekness modesty shyness timidity weakness
WEAK
doubt hesitancy misgiving

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It gave multiple generations the assurance that we couldn’t easily be deported, unlike others we knew who didn’t have the good fortune to be born here.

From Los Angeles Times • Apr. 4, 2026

The question is what level of assurance they need to start sailing again in large numbers.

From The Wall Street Journal • Apr. 4, 2026

You might call it lazy if Coppola didn’t operate with so much assurance.

From Salon • Mar. 27, 2026

"These reviews provide a further level of independent assurance that the care provided by Belfast Trust effectively meets those needs," it added.

From BBC • Mar. 24, 2026

You have my personal assurance that Mother Paula’s is working closely with local authorities, in full compliance with all laws, codes, and regulations.

From "Hoot" by Carl Hiaasen

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.