Origin: 1300–50; Middle English shrille (adj., v.); akin to Old English scrallettan to sound loudly; cognate with German schrill (adj.), schrillen (v.); compare Old Norse skrīll rabble
late 14c., schrylle "high-pitched, piercing" (of the voice), probably related to O.E. scralletan "to sound loudly," of imitative origin (cf. Low Ger. schrell, Ger. schrill "piercing, shrill"). The verb sense of "to sound shrilly" is recorded from c.1300.