Discomfited, abashed, put to shame or mental confusion; confused, disordered, etc.: see the verb.

Of persons: Not at one's ease; embarrassed.

Feeling, expressing, or characterized by embarrassment (embarrassment, n. 3); awkward, self-conscious. (Now the usual sense.)

Of persons: Behaving under constraint, having the spontaneous and natural impulses checked, embarrassed.

Constrained, embarrassed, discomforted. Also as v. transitive, to make (someone) feel gêné.