1.Definition: being sharply insistent on being heard

"Strident demands"

Related Adjective(s):shrill

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

"Strident demands"

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

3.Definition: of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')

Related Adjective(s):continuant, fricative, sibilant, spirant

4.Definition: unpleasantly loud and harsh

Related Adjective(s):raucous