Antonyms of adj incertain

1 sense of incertain

Sense 1
uncertain (vs. certain), unsure (vs. sure), incertain -- (lacking or indicating lack of confidence or assurance; "uncertain of his convictions"; "unsure of himself and his future"; "moving with uncertain (or unsure) steps"; "an uncertain smile"; "touched the ornaments with uncertain fingers")


Similarity of adj incertain

1 sense of incertain

Sense 1
uncertain (vs. certain), unsure (vs. sure), incertain -- (lacking or indicating lack of confidence or assurance; "uncertain of his convictions"; "unsure of himself and his future"; "moving with uncertain (or unsure) steps"; "an uncertain smile"; "touched the ornaments with uncertain fingers")
       => ambivalent -- (uncertain or unable to decide about what course to follow; "was ambivalent about having children")
       => doubtful, dubious -- (fraught with uncertainty or doubt; "they were doubtful that the cord would hold"; "it was doubtful whether she would be admitted"; "dubious about agreeing to go")
       => groping -- (acting with uncertainty or hesitance or lack of confidence; "a groping effort to understand")