diffident

not comfortable around people <for someone who makes a living performing for other people, the actress is remarkably diffident in real life> Synonyms backward, bashful, coy, demure, shy, introverted, modest, recessive, retiring, self-effacing, sheepish, withdrawnRelated Words antisocial, lone, lone-wolf, unsociable, unsocial; awkward, embarrassed, self-conscious, unadventurous, unassertive, unenterprising; inhibited, reserved, uneasy, uptightNear Antonyms boon, clubbable (also clubable), companionable, convivial, gregarious, sociable, social; bold, dashing, forceful; brash, forward, overbold, uninhibited, unreservedAntonyms extroverted (also extraverted), immodest, outgoing