Shrill

a.	1.	Acute; sharp; piercing; having or emitting a sharp, piercing tone or sound; - said of a sound, or of that which produces a sound. Hear the shrill whistle which doth order give To sounds confused. - Shak. Let winds be shrill, let waves roll high. - Byron.
n.	1.	A shrill sound.
v. i.	1.	To utter an acute, piercing sound; to sound with a sharp, shrill tone; to become shrill. [imp. & p. p. Shrilled ; p. pr. & vb. n. Shrilling.] Break we our pipes, that shrilledloud as lark. - Spenser. No sounds were heard but of the shrilling cock. - Goldsmith. His voice shrilled with passion. - L. Wallace.
v. t.	1.	To utter or express in a shrill tone; to cause to make a shrill sound. How poor Andromache shrills her dolors forth. - Shak.

Verb	1.	shrill - utter a shrill cry Synonyms: pipe, shriek, pipe up
Adj.	1.	shrill - high-pitched and sharp; "piercing screams"; "a shrill whistle" Synonyms: piercing, sharp

absonant, argute, atonal, cacophonous, caterwaul, cracked, creak, creaky, diaphonic, disconsonant, discordant, disharmonic, disharmonious, dissonant, ear-piercing, ear-splitting, flat, grating, harsh, high, high-pitched, howl, howling, immelodious, inharmonic, inharmonious, keening, musicless, nonmelodious, off, off-key, off-tone, out of pitch, out of tone, out of tune, pipe, piping, raucous, reedy, screak, screaky, scream, screech, screeching, screechy, shriek, shrieking, shrieky, skirl, skreigh, sour, squawk, squeak, squeaking, squeaky, squeal, strident, thin, treble, tuneless, ululant, ululation, unharmonious, unmelodious, unmusical, untunable, untuned, untuneful, wail, wailing, whine, whining, whistle, whistling, yammer