Etymology
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barefaced (adj.)

1580s, "with face uncovered or shaven;" see bare (adj.) + face (n.). Thus, "unconcealed" (c. 1600), and, in a bad sense, "shameless, audacious" (1670s). Compare effrontery. The half-French bare-vis (adj.) conveyed the same sense in Middle English. Related: Barefacedly.

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Definitions of barefaced

barefaced (adj.)
with no effort to conceal;
a barefaced lie
Synonyms: bald
barefaced (adj.)
unrestrained by convention or propriety; "the most bodacious display of tourism this side of Anaheim"- Los Angeles Times; "the modern world with its quick material successes and insolent belief in the boundless possibilities of progress"- Bertrand Russell;
a barefaced hypocrite
Synonyms: audacious / bodacious / bald-faced / brassy / brazen / brazen-faced / insolent
From wordnet.princeton.edu