To reaffirm the establishment of (a reservation or advance arrangement).
To undertake to do, accomplish, or ensure (something) for another:
To refuse to believe or accept; reject:
To give support to; foster:
To cause (another) to believe or feel sure about something
Something that serves as an assurance, or guarantee, of some event or result
A representation, especially in writing, made by a seller or company to a purchaser of a product or service that a refund, repair, or replacement will be made if the product or service proves defective or unsatisfactory, especially within a given time period.
To make firm; to confirm, or ratify; especially (law) to assert or confirm, as a judgment, decree, or order, brought before an appelate court for review.
To put into action boldly; employ or demonstrate:
To bear witness; give testimony:
To accept responsibility for (an action, for example); acknowledge.
Lock is defined as to secure, trap or fasten.
To give assurance of friendship by the act of drinking; to drink to one's health.
To prove is to demonstrate or establish that something is true or to show certain abilities.
To substantiate is to prove a claim to be true or back up a claim with evidence.
To swear is to speak using bad or rude language.
To constitute supporting evidence; give substantiation:
The definition of persuade is to convince someone to do or think something.
To comply with (rules, standards, or obligations)
To make sure of
To render certain
To understand; comprehend:
Check means to test, examine, compare or inspect something to see if it is as it should be.
be careful or certain to do something; make certain of something
Control is defined as to command, restrain, or manage.
To secure is to firmly attach something, to take action to make an area safe or to obtain something that you have been seeking.
To reveal something that is not supposed to be revealed, especially something that someone has done wrong:
To manage to get (along or through) in the face of trials and difficulties
To soothe in distress or sorrow; ease the misery or grief of; bring consolation or hope to
Confident; sure of oneself
The definition of confident is to be certain about something or feeling sure of yourself and your abilities.
The definition of aplomb is a strong belief in yourself and the ability to remain calm under pressure.
The act or habit of arrogating, or making undue claims in an overbearing manner; that species of pride which consists in exorbitant claims of rank, dignity, estimation, or power, or which exalts the worth or importance of the person to an undue degree; proud contempt of others; lordliness; haughtiness; self-assumption; presumption.
Something said or done to inspire confidence, as a promise, positive statement, etc.; guarantee
Shameless or brazen boldness; insolence
The belief that another will keep a secret; assurance of secrecy
Brazen boldness; presumptuousness.
Impudent speech or behavior
Reliance on one's own capabilities, judgment, or resources; independence.
Evidence; confirmation; warrant.
To acknowledge in writing on the face of (a check) that the signature of the maker is genuine and that there are sufficient funds on deposit for its payment.
To fix or secure (a nail or bolt, for example) by bending down or flattening the pointed end that protrudes.
To declare means to make a statement or make information known.
Find another word for assure. In this page you can discover 75 synonyms, antonyms, idiomatic expressions, and related words for assure, like: confirm, guarantee, express doubt, be unsure, disbelieve, believe, be confident, encourage, persuasion, warrant and warranty.