8 letters · 9 points in Scrabble
adjective conspicuously and offensively loud; given to vehement outcry
adjective of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')
adjective being sharply insistent on being heard
originFrom French strident, from Latin strīdēns, present active participle of strīdō.
Etymology from Wiktionary, CC BY-SA 3.0