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assure

If you assure your boss that you’ll finish your project by Tuesday, you are make a promise or commitment to have it done by Tuesday.

The verbs insure and ensure look and sound like assure but they aren't synonyms. There is some overlap in meaning — all of them can mean “to make secure or certain” — but assure is generally used in situations when you are referring to a person: “I assure you that I haven’t forgotten about driving you to the airport” or “He called his mother to assure her that everything will be fine.”

DEFINITIONS OF: assure

v inform positively and with certainty and confidence

Synonyms:: tell

Type of:: affirm, assert, aver, avow, swan, swear, verify
to declare or affirm solemnly and formally as true

v assure somebody of the truth of something with the intention of giving the listener confidence

“I assured him that traveling to Cambodia was safe”

Types:: reassure
give or restore confidence in; cause to feel sure or certain

Type of:: persuade
cause somebody to adopt a certain position, belief, or course of action; twist somebody's arm

v cause to feel sure; give reassurance to

Synonyms:: reassure

Antonyms:: vex, worry
disturb the peace of mind of; afflict with mental agitation or distress; worry
be worried, concerned, anxious, troubled, or uneasy; show more antonyms...

Type of:: calm, calm down, lull, quiet, quieten, still, tranquilize, tranquillise, tranquillize
make calm or still

v be careful or certain to do something; make certain of something

Synonyms:: ascertain, check, control, ensure, insure, see, see to it

: check, check off, mark, mark off, tick, tick off
put a check mark on or near or next to; check
verify by consulting a source or authority; ascertain, check, determine, find out, learn, see, watch
find out, learn, or determine with certainty, usually by making an inquiry or other effort; control, verify
check or regulate (a scientific experiment) by conducting a parallel experiment or comparing with another standard

Types:: show 8 types...; hide 8 types...; proof, proofread
read for errors; control
verify by using a duplicate register for comparison; double-check
check once more to be absolutely sure; cross-check
check out conflicting sources; crosscheck facts, for example; cinch
make sure of; card
ask someone for identification to determine whether he or she is old enough to consume liquor; spot-check
pick out random samples for examination in order to ensure high quality; cover
maintain a check on; especially by patrolling

Type of:: verify
confirm the truth of

v make certain of

Synonyms:: ensure, guarantee, insure, secure

: guarantee, vouch
give surety or assume responsibility

Types:: doom
make certain of the failure or destruction of; make
assure the success of

v make a promise or commitment

Synonyms:: promise

Types:: show 14 types...; hide 14 types...; pledge, plight
promise solemnly and formally; swear off
promise to abstain from; contract, undertake
enter into a contractual arrangement; guarantee, undertake
promise to do or accomplish; vow
make a vow; promise; stipulate
make an oral contract or agreement in the verbal form of question and answer that is necessary to give it legal force; sign
be engaged by a written agreement; subvent, subvention, underwrite
guarantee financial support of; guarantee, vouch
give surety or assume responsibility; condition, qualify, specify, stipulate
specify as a condition or requirement in a contract or agreement; make an express demand or provision in an agreement; covenant
enter into a covenant or formal agreement; lease, rent
let for money; charter, hire, lease, rent
hold under a lease or rental agreement; of goods and services; covenant
enter into a covenant

Type of:: declare
state emphatically and authoritatively

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