adjective

diffident

DIF-ih-dunt/ˈdɪfɪdənt/

Shy or hesitant because of a lack of self-confidence.

She sounds diffident when she shares her ideas in meetings.

At a small group discussion, a woman tentatively raises one hand only slightly, shoulders drawn inward and eyes lowered, while saying, “I might be wrong, but…” A nearby participant watches patiently.

Etymology

difLatinaway

+fidLatinto trust

+entLatinpresent participle ending

The prefix turns 'trust' into mistrust or lack of confidence. Originally directed toward other people's powers, that distrust shifted inward, giving the modern sense of shyness and doubt about oneself.

In context

Libranima519:08

heart was filled with dread and he began to be afraid of every word he uttered, every gesture he made, which was very trying for a man who already felt diffident.

Crime and Punishment - Dostoevsky (Illustrated Audiobook) Part 1 of 2

More examples

Even after winning the award, he remains diffident about his abilities.
Her diffident reply suggests she doubts her own judgment.
The new student is too diffident to ask for help.

Forms

diffident · more diffident · most diffident

diffidence noun — Shyness or hesitation caused by low self-confidence.

diffidently adverb — In a shy manner showing little self-confidence.

Similar words

shy: Emphasizes discomfort around people rather than doubt about one's abilities.
timid: Emphasizes fearfulness or lack of courage, not necessarily self-doubt.
hesitant: Describes reluctance to act or speak for any reason.