1.Definition: conspicuously and offensively loud; given to vehement outcry

"Blatant radios"

Related Adjective(s):clamant, clamorous, strident, vociferous

2.Definition: without any attempt at concealment; completely obvious

"Blatant disregard of the law", "A blatant appeal to vanity"

Related Adjective(s):blazing, conspicuous