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How to sign: 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";
Similiar / Same: uncertain, incertain
How to sign: lacking self-confidence
"stood in the doorway diffident and abashed"; "problems that call for bold not timid responses"; "a very unsure young man";
