strident vs blatant

strident and blatant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
strident	No	Yes	No	No
blatant	No	Yes	No	No

As adjectives, strident and blatant are synonyms defined as:

strident and blatant: conspicuously and offensively loud; given to vehement outcry

Other synonyms of strident include clamant, clamorous, vociferous.

strident (adjective)	blatant (adjective)
unpleasantly loud and harsh	conspicuously and offensively loud; given to vehement outcry
being sharply insistent on being heard	without any attempt at concealment; completely obvious
conspicuously and offensively loud; given to vehement outcry
of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')