Synonyms of diffident

Adjective

1. diffident, reserved (vs. unreserved)

usage: showing modest reserve; "she was diffident when offering a comment on the professor's lecture"

2. diffident (vs. confident), shy, timid, unsure

usage: lacking self-confidence; "stood in the doorway diffident and abashed"; "problems that call for bold not timid responses"; "a very unsure young man"

See also: diffident (Dictionary)