assurance
noun
as·sur·ance ə-ˈshu̇r-ən(t)s 
1
: the state of being assured: such as
a
: a being certain in the mind
the puritan's assurance of salvation
b
: confidence of mind or manner : easy freedom from self-doubt or uncertainty
spoke with assurance about his future plans
also : excessive self-confidence : brashness, presumption
c
: security
2
: something that inspires or tends to inspire confidence
gave repeated assurances of goodwill
3
: the act or action of assuring someone or something: such as
a
: pledge, guarantee
You have my solemn assurance that it is true.
b
: the act of conveying real property (see real entry 1 sense 2)
also : the instrument (see instrument entry 1 sense 5) by which it is conveyed
c
chiefly British : insurance
Synonyms
- assuredness
- certainty
- certitude
- cocksureness
- confidence
- conviction
- doubtlessness
- face
- positiveness
- satisfaction
- sureness
- surety
See all Synonyms & Antonyms 
Example Sentences
They lent us the money with the assurance that they would be repaid soon. He has the assurance of continued support from his boss. He spoke with quiet assurance about his future plans. She gave him every assurance that she would be there when he returned.
Recent Examples on the Web Anyone looking for any tangible assurance of Pac-12 stability on Friday was left wanting more. 
oregonlive, 29 July 2022 For extra assurance, first put the brown sugar in a resealable plastic bag (with the air all squeezed out) before placing it in your air-tight container. Taylor Worden, Good Housekeeping, 21 July 2022 For extra assurance, purchase a second, fully-refundable ticket for a flight scheduled two to three hours later. Megan Cerullo, CBS News, 22 June 2022 For assurance of a spot on the boat, call for reservations (419-734-1143) or show up early for the 7 a.m. or 2 p.m. departures. cleveland, 3 June 2022 This is a scientific literacy problem, magnified by publishers’ hunger for clicks and marketers’ assurance that no one’s going to fact-check their often extravagantly outsize claims. Max Falkowitz, Bon Appétit, 5 May 2022 Employees are looking to their workplace leaders for assurance, direction and support. Rob Catalano, Forbes, 2 May 2022 Oklahoma Christian has submitted a request for assurance of religious exemption under certain conditions more than once, according to the documents on the Department of Education website. Kiara Alfonseca, ABC News, 10 Apr. 2022 For some quantitative assurance, the pork temperature should read in the range of 170 or 180 degrees on a thermometer, or closer to 200 degrees for something that approximates pulled pork. Murat Oztaskin, Outside Online, 10 July 2021 See More
oregonlive, 29 July 2022 For extra assurance, first put the brown sugar in a resealable plastic bag (with the air all squeezed out) before placing it in your air-tight container. Taylor Worden, Good Housekeeping, 21 July 2022 For extra assurance, purchase a second, fully-refundable ticket for a flight scheduled two to three hours later. Megan Cerullo, CBS News, 22 June 2022 For assurance of a spot on the boat, call for reservations (419-734-1143) or show up early for the 7 a.m. or 2 p.m. departures. cleveland, 3 June 2022 This is a scientific literacy problem, magnified by publishers’ hunger for clicks and marketers’ assurance that no one’s going to fact-check their often extravagantly outsize claims. Max Falkowitz, Bon Appétit, 5 May 2022 Employees are looking to their workplace leaders for assurance, direction and support. Rob Catalano, Forbes, 2 May 2022 Oklahoma Christian has submitted a request for assurance of religious exemption under certain conditions more than once, according to the documents on the Department of Education website. Kiara Alfonseca, ABC News, 10 Apr. 2022 For some quantitative assurance, the pork temperature should read in the range of 170 or 180 degrees on a thermometer, or closer to 200 degrees for something that approximates pulled pork. Murat Oztaskin, Outside Online, 10 July 2021 See More Word History
Etymology
see assure
First Known Use
14th century, in the meaning defined at sense 3a
Phrases Containing assurance
Kids Definition
assurance
noun
as·sur·ance ə-ˈshu̇r-əns
1
: the act of making sure or confident
You have my assurance that it's true.
2
: the state of being sure or confident
I lent him money with assurance that I would be repaid.
3
: self-confidence She spoke of her plans with quiet assurance.
Legal Definition
assurance
noun
as·sur·ance
1
a
: the act of assuring
b
: guarantee sense 3
2
: the act of conveying real property
also : the document by which it is conveyed
3
chiefly British : insurance
assurance
noun
1
as in certainty
a state of mind in which one is free from doubt I can state with complete assurance that no harm will ever come to you Synonyms & Similar Words
Relevance
- certainty
- confidence
- satisfaction
- conviction
- surety
- assuredness
- certitude
- sureness
- positiveness
- cocksureness
- doubtlessness
- determination
- face
- firmness
- resolution
- dogmatism
- resoluteness
- resolve
- purposefulness
- authoritarianism
- decisiveness
Antonyms & Near Antonyms
- doubt
- uncertainty
- hesitation
- concern
- incertitude
- hesitancy
- irresolution
- anxiety
- disbelief
- incredulity
- nonconfidence
- misgiving
- indecisiveness
- unbelief
- suspicion
- distrust
- mistrust
2
as in confidence
great faith in oneself or one's abilities her assurance was evident in the way she carried herself onto the playing field Synonyms & Similar Words
- confidence
- composure
- self-assurance
- pridefulness
- aplomb
- pride
- self-assuredness
- self-confidence
- complacency
- vanity
- self-trust
- smugness
- equanimity
- calmness
- superiority
- complacence
- overconfidence
- cockiness
- hubris
- ego
- coolness
- conceitedness
- egoism
- assumption
- pomposity
- self-complacency
- self-content
- self-satisfaction
- vaingloriousness
- vainglory
- egotism
- self-contentment
- pompousness
- loftiness
- conceit
- self-opinion
- self-esteem
- self-assumption
- self-applause
- imperiousness
- self-admiration
- self-consequence
- superciliousness
- bumptiousness
- peremptoriness
- haughtiness
- lordliness
- hauteur
- self-conceit
- self-glorification
- self-partiality
- toploftiness
- self-importance
- presumptuousness
- self-possession
- self-poise
- huffiness
- pretentiousness
Antonyms & Near Antonyms
- insecurity
- doubt
- diffidence
- apprehension
- misgiving
- self-distrust
- self-doubt
Synonym Chooser
Some common synonyms of assurance are aplomb, confidence, and self-possession. While all these words mean "a state of mind or a manner marked by easy coolness and freedom from uncertainty, diffidence, or embarrassment," assurance carries a stronger implication of certainty and may suggest arrogance or lack of objectivity in assessing one's own powers.
handled the cross-examination with complete assurance
While the synonyms aplomb and assurance are close in meaning, aplomb implies a manifest self-possession in trying or challenging situations.
handled the reporters with great aplomb
The synonyms confidence and assurance are sometimes interchangeable, but confidence stresses faith in oneself and one's powers without any suggestion of conceit or arrogance.
the confidence that comes from long experience
The words self-possession and assurance can be used in similar contexts, but self-possession implies an ease or coolness under stress that reflects perfect self-control and command of one's powers.
answered the insolent question with complete self-possession