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Definitions

make sure

VERB

ascertain

Synonyms

STRONGEST

confirm determine divine double-check find out verify

STRONG

check dig discover establish eye eyeball fix identify learn peg read see settle size tell

WEAK

catch on check out check up on get down cold get down pat get hold of get it down get the hang of learn the ropes make certain pick up pick up on size up

Antonyms

STRONGEST

disprove invalidate

STRONG

aid assist confuse destroy help ignore look away miss misunderstand neglect overlook unsettle

VERB

assure

Synonyms

STRONGEST

confirm ensure guarantee insure secure

STRONG

cinch clinch complete ice lock seal set

WEAK

have a lock on lock on lock up nail down put on ice

Antonyms

STRONG

halt

VERB

check

Synonyms

STRONGEST

analyze confirm correct find out go through investigate look at monitor probe review scrutinize study test try verify

STRONG

ascertain audit candle case compare count eyeball frisk note overlook prove quiz tell

WEAK

balance account enquire about keep account look over scout out take stock

Antonyms

STRONGEST

disregard ignore neglect overlook

STRONG

estimate guess

WEAK

forget invalidate

VERB

confirm

Synonyms

STRONGEST

affirm approve back certify corroborate endorse establish explain sign substantiate support uphold verify

STRONG

attest authenticate bless buy check circumstantiate debunk double-check justify okay sanction settle subscribe underpin vouch warrant witness

WEAK

bear out check out give green light give high sign give stamp of approval give the go-ahead give the nod lap up make good rubber-stamp sign off on size up thumbs-up

Antonyms

STRONGEST

confuse contradict deny disallow disapprove discredit disprove invalidate oppose refuse reject

STRONG

disagree refute veto

WEAK

annul cancel destroy repudiate void

VERB

ensure

Synonyms

STRONGEST

assure establish insure protect provide safeguard secure

STRONG

arrange certify cinch clinch confirm effect guard okay warrant

WEAK

lock on lock up make certain make safe nail down put on ice set out

Antonyms

STRONGEST

endanger harm hurt injure

STRONG

contradict deny forget ignore invalidate neglect reject repudiate veto

VERB

follow up

Synonyms

WEAK

check out find out about investigate look into pursue

Antonyms

WEAK

avoid dodge forget

VERB

guarantee

Synonyms

STRONGEST

assure ensure insure maintain protect prove secure support

STRONG

affirm angel attest aver back bankroll certify confirm cosign endorse evidence evince grubstake guaranty juice mortgage reassure stake swear testify wager warrant witness

WEAK

answer for be surety for bind oneself get behind give bond make bail make certain pick up the check pick up the tab sign for stand behind stand up for vouch for

Antonyms

STRONGEST

harm hurt injure let go neglect

STRONG

contradict deny discourage disprove invalidate oppose refute reject repudiate veto

WEAK

break

VERB

secure

Synonyms

STRONGEST

achieve assure buy capture ensure gain get guarantee have insure take win

STRONG

access acquire annex bag catch cinch grasp hook land lock procure

WEAK

chalk up come by get hold of lock up pick up rack up

Antonyms

STRONGEST

forfeit lose miss

STRONG

let go release

WEAK

give up

VERB

verify

Synonyms

STRONGEST

authenticate certify check corroborate demonstrate double-check establish find out justify prove substantiate

STRONG

attest debunk document eye eyeball peg settle size support test try

WEAK

add up bear out check out check up check up on hold up make certain pan out size up stand up

Antonyms

STRONGEST

conceal confuse contradict deny discredit disprove hide invalidate reject

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.

But at the very least, investors should make sure the spending is counted when they’re sizing up the market.

From Barron's • Apr. 3, 2026

She also wrote books, manuals and patient workbooks to make sure that the training was implemented correctly.

From The Wall Street Journal • Apr. 3, 2026

“President Trump promised to reinvest in America’s national security infrastructure, to make sure our Nation is safe in a dangerous world,” the document reads.

From Salon • Apr. 3, 2026

To find out the character of these players, I would go through numerous routes to make sure the lad I was going to sign indeed had the right credentials.

From BBC • Apr. 3, 2026

I make myself go extra slowly at first, to make sure my shin’s OK, and the run starts off fine.

From "Keeping Pace" by Laurie Morrison

make sure

Example Sentences

Related Words