Rụt rè, nhút nhát, bẽn lẽn, dễ sợ hãi

as timid as a rabbit

nhát như thỏ đế

Shy, retiring, modest, coy, bashful, diffident, timorous,fearful, apprehensive, mousy, scared, frightened, nervous,cowardly, pusillanimous, craven, Colloq chicken-hearted, yellow,yellow-bellied, chicken, chicken-livered, lily-livered, gutless:I knew this strapping marine when he was a timid little boy.

(timider, timidest) easily frightened; apprehensive, shy.

Timidity n. timidly adv. timidness n. [F timide or Ltimidus f. timere fear]