shy

Synonyms: afraid apprehensive averse backward bashful cautious chary circumspect conscious coy demure diffident disinclined distrustful fearful hesitant humble indisposed introvert introverted loath loner modest nervous recessive reluctant reserved reticent retiring self-effacing shamefaced sheepish shrinking skittish suspicious timid unassertive unassured uneager uneffusive unresponsive unsocial unwilling wary

Antonyms: confident extroverted unashamed unreserved unshy

Synonyms: deficient inadequate insufficient scant scanty scarce short unsufficient wanting

Antonyms: adequate enough sufficient