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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.

Continue the premiums by direct debit and make sure that the insurance company has no reason or loophole to cancel it for lack of payment.

From MarketWatch • Jun. 9, 2026

By giving an episode to each of our lead four characters, we could use their view of the island to make sure the complexity of Golding’s telling shined.

From Los Angeles Times • Jun. 9, 2026

“Importing governments are asking one question, ‘What do we do to make sure this never happens again,’” says Kevin Book, co-founder of ClearView Energy Partners.

From The Wall Street Journal • Jun. 9, 2026

"There's different models that schools will use to try and make sure that young people are not having parts of the curriculum obliterated because you don't have those staff - but sometimes it's really difficult."

From BBC • Jun. 8, 2026

Jonah stared at the girl, to make sure he’d recognize her later on too.

From "Found" by Margaret Peterson Haddix

make sure

Example Sentences

Related Words