taciturn 8 Associations

buttoned-up (similar term) reticent (similar term) untalkative (similar term) concise (related term) uncommunicative (related term) incommunicative (related term) voluble (antonym)

unassertive 11 Associations

nonassertive (similar term) reticent (similar term) self-effacing (similar term) retiring (similar term) submissive (related term) timid (related term) unaggressive (related term)

undemonstrative 15 Associations

reserved (similar term) restrained (similar term) reticent (similar term) unemotional (similar term) reserved (related term) demonstrative (antonym)