adjective
describing someone who lacks confidence or self-assurance
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She appeared unconfident during the presentation, stumbling over her words and avoiding eye contact.
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I feel unconfident about asking him out on a date, I'm afraid he might say no.
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I'm feeling so unconfident about this job interview, I don't think I'll get it.
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His unconfident demeanor was like a dark cloud hanging over the room, affecting everyone's mood.