adjective

unsophisticated and socially awkward.

a shy and gauche teenager

awkward,gawky,inelegant,graceless,ungraceful,ungainly,bumbling,maladroit,inept,socially awkward,socially inept,lacking in social grace(s),unpolished,unsophisticated,uncultured,uncultivated,unrefined,raw,inexperienced,uneducated,unworldly