blatant

Concise Oxford English Dictionary © 2008 Oxford University Press:
blatant /ˈbleɪt(ə)nt/

▶adjective open and unashamed; flagrant.

– derivatives
blatancy noun,
blatantly adverb.

word history: The word blatant was first used by the poet Edmund Spenser in his romance The Faerie Queene (1596), in which he called a thousand-tongued monster produced by Cerberus and Chimaera the blatant beast. Spenser used the monster as a symbol of slander, and may have adopted the word blatant from Scots blatand ‘bleating’. Blatant was subsequently used to mean ‘loud and clamorous’; the sense ‘unashamed, flagrant’ arose in the late 19th century.