uncertain

noun

(with "the") Something uncertain.

adjective

Not certain; unsure.

Not known for certain; questionable.

Not yet determined; undecided.

Variable and subject to change.

Fitful or unsteady.

Unpredictable or capricious.

Roots

unun- · Old English · not, reverse certus-cert · Latin · sure, settled

Words related to uncertain

uncertainnessn uncertainlyadv uncertaintyn unsurelyadv dubitableadj iffinessn indeterminateadj precariousadj indeterminatenessn noncommittaladj indeterminableadj doubtableadj incertituden doubtfulnessn uneasyadj

Synonyms & related words for uncertain

Find synonyms, related words, and the definition of uncertain — including unsure, unsettled, doubtful, unclear, undetermined, iffy. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to uncertain

Explore words related to uncertain — words associated with it, words that go with it, and its nearest matches in meaning. Related words include uncertainness, uncertainly, uncertainty, unsurely, dubitable, iffiness, indeterminate, precarious. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for uncertain

Common synonyms for uncertain include unsure, unsettled, doubtful, unclear, undetermined, iffy, changeable, undecided — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does uncertain come from?

The word uncertain breaks down into 2 roots of Old English and Latin origin: un-, from Old English un (“not, reverse”); and -cert, from Latin certus (“sure, settled”). Explore each root to see other English words built from the same source.