Definitions

to be sure

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indeed adv.
surely adv.

ADVERB

indeed

Synonyms

STRONGEST

absolutely certainly easily naturally really surely truly undeniably undoubtedly very very much

WEAK

amen doubtlessly even for real in point of fact in truth much of course positively strictly sure thing verily veritably well

Antonyms

STRONGEST

doubtfully dubiously indefinite questionably

ADVERB

surely

Synonyms

STRONGEST

absolutely assuredly certainly clearly definitely evidently indeed inevitably inexorably plainly undoubtedly unquestionably

WEAK

admittedly beyond doubt beyond shadow of doubt come what may conclusively decidedly distinctly doubtlessly explicitly fixedly for certain indubitably infallibly irrefutably manifestly nothing else but positively rain or shine unequivocally unerringly unfailingly unmistakably unshakably with certainty without fail

Antonyms

STRONGEST

doubtfully dubiously indefinite indefinitely questionably vaguely

WEAK

uncertain

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.

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to be sure

“I want to be sure that the LLC proceeds with the ideas we discussed — giving scholarships and recognition to women in engineering, etc.,” wrote Mitchell.

From Salon ● Sep. 23, 2026

Thirlwall added that "no-one seems to have understood that safeguarding action is required when a member of staff is suspected of causing deliberate harm - and does not require colleagues to be sure of guilt".

From BBC ● Sep. 15, 2026

But check with your local branch to be sure.

From MarketWatch ● Sep. 3, 2026

“So you would want to be sure you know exactly where that material is and be sure you control it.”

From The Wall Street Journal ● Sep. 2, 2026

I’m experiencing superhuman powers that apparently she knew were coming, and she still wants to be sure we’re caring for those around us.

From "Clairboyance" by Kristiana Kahakauwila

to be sure

Example Sentences

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