Lacking shame, destitute of feelings of modesty; impudent, audacious, immodest; insensible to disgrace.

Immodest. Of persons, the mind, heart, etc.

(a) Not put to shame. (b) Unashamed.

Shameless.

Shameless.

(un-, prefix1.)

(un-, prefix1 affix 10a.)

Without a blush, unblushing; impudent, shameless.

With bold unblushing front, impudent, unabashed.

figurative. Hardened in effrontery; shameless.

Unabashed, shameless, unblushing, bold.

figurative with many varieties of sense. Having a ‘face of brass’, unblushing, impudently confident, or forward.

Hardened with effrontery, brazen. Obsolete.

Having no forehead, n. (sense 2a). having no sense of shame. Obsolete.

figurative. Unblushing, shameless, audacious, daring; = foreheadless, adj. Now rare.

Without shame, unabashed. Cf. frontless, adj. 1. Obsolete.

proof against eyes, even those of a basilisk; unabashed, shameless.

Unabashed.

Unblushing, brazen, shameless.

Hence by gradual pejoration: Audacious, impudent, shameless. of persons,

Of a person, an action, or a person's behaviour: assured and unabashed where diffidence and hesitation would be expected; composedly and deliberately…

Immodest, shameless, unabashed.

Made of, or overlaid with brass: also figurative.

Unblushing, shameless.

Originally: overt, unconcealed, obvious. In later use also: unabashed, impudent, shameless. Cf. barefaced, adj.

Grown shameless, feelingless; hardened.

Made or covered with brass; also figurative brazened, rendered shameless.