Antonyms of adj unsure

2 senses of unsure

Sense 1
diffident (vs. confident), shy, timid, unsure -- (lacking self-confidence; "stood in the doorway diffident and abashed"; "problems that call for bold not timid responses"; "a very unsure young man")


Sense 2
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")

certain(predicate) (vs. uncertain), sure (vs. unsure) -- (having or feeling no doubt or uncertainty; confident and assured; "felt certain of success"; "was sure (or certain) she had seen it"; "was very sure in his beliefs"; "sure of her friends")
        => convinced (predicate), positive (predicate), confident (predicate) -- (persuaded of; very sure; "were convinced that it would be to their advantage to join"; "I am positive he is lying"; "was confident he would win")

Similarity of adj unsure

2 senses of unsure

Sense 1
diffident (vs. confident), shy, timid, unsure -- (lacking self-confidence; "stood in the doorway diffident and abashed"; "problems that call for bold not timid responses"; "a very unsure young man")

Sense 2
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")

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