SHAMELESS
shameless, unblushing
(adjective) feeling no shame; “a shameless imposter”; “an unblushing apologist for fascism”
Source: WordNet® 3.1
Etymology
Adjective
shameless (comparative more shameless, superlative most shameless)
Having no shame, no guilt nor remorse over something considered wrong; immodest; unable to feel disgrace.
Source: Wiktionary
Shame"less, a. Etym: [AS. scamleás.]
1. Destitute of shame; wanting modesty; brazen-faced; insensible to
disgrace. "Such shameless bards we have." Pope.
Shame enough to shame thee, wert thou not shameless. Shak.
2. Indicating want of modesty, or sensibility to disgrace; indecent;
as, a shameless picture or poem.
Syn.
– Impudent; unblushing; audacious; immodest; indecent; indelicate.
– Shame"less*ly, adv.
– Shame"less*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition