shy (the usual word)

shy

(especially of a woman) pretending to be shy, modest

very modest

(especially of a woman) quiet and serious

reserved, affected

not having, not showing, much belief in one's own abilities

hesitant; unconfident

having, showing, a low but honest opinion of one's own merits, abilities etc; not large in size or amount

shy

(especially of hair having a dull brown colour; (of a person) timid, shy

drab; quiet

not able to oppose the effect of a disease, chemical etc

lifeless, inactive

showing no enthusiasm, interest etc; not willing to fight when attacked or opposed

lifeless, inactive

having or showing acceptance (of something unpleasant)

enduring, passive

(of a person) self-conscious and uncomfortable in the presence of others; (of animals etc) easily frightened

quiet and self-conscious

easily frightened

shy

afraid

afraid

not drawing attention to oneself; modest

shy