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sure
adjective
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Divide sure into syllables:

sure

How to pronounce sure:

Definition of sure:

sure (adjective):
marked by or given to feelings of confident certainty
free from doubt or uncertainty (in regard to a belief)
having or feeling no doubt or uncertainty; confident and assured.

Synonyms for sure:

sanguineconvincedsatisfiedpersuadeddecidedclearconfidentconfidencepositivecertainty
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Antonyms for sure:

undeterminedhesitantdismayeddistrustfulunsurevaguemistrustfulunclearchangeableirresolute
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Other 1-syllable words like sure

Here are some other common words that have 1 syllable, like sure does.

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