Origin: 1300–50;Middle Englishshrille (adj., v.); akin to Old Englishscrallettan to sound loudly; cognate with Germanschrill (adj.), schrillen (v.); compare Old Norseskrīll 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.