Synonyms of the word

reticent

• adj. Keeping one's thoughts and opinions to oneself; reserved or restrained.
• adj. (proscribed) Hesitant or not wanting to take some action; reluctant (usually followed by to and a verb…

reserved

• v. simple past tense and past participle of reserve.
• adj. (comparable) Slow to reveal emotion or opinions.
• adj. (not comparable) Set aside for the use of a particular person or party.

restrained

• adj. Held back, limited, kept in check or under control.
• v. simple past tense and past participle of restrain.

retiring

• adj. Shy, introverted, liking privacy and seclusion.
• adj. About to retire from work.
• v. present participle of retire.
• n. retirement.

self-effacing

• adj. Shy, extremely humble and modest; making oneself seem unnoticeable.

taciturn

• adj. Silent; temperamentally untalkative; disinclined to speak.

unassertive

• adj. Not assertive.

undemonstrative

• adj. not given to showing emotion or feelings; reserved or distant.

unemotional

• adj. Showing little or no feeling.
• adj. Reasoned and objective, involving reason or intellect rather than feelings.

untalkative

• adj. unwilling to talk; taciturn; refusing to speak.