blatant, adv. — Green’s Dictionary of Slang

blatant adv.

also blatantly

[SE blatant, glaringly or defiantly conspicuous]

(UK black) a general intensifier, definitely, undoubtedly, very much so.

1997		C. Newland Scholar 26: I’ll let him know blatant.
2020		G. Krauze Who They Was 8: Myman blatantly slammed the door on his own wife’s arm.