Shrill1. (v. i.) Acute; sharp; piercing; having or emitting a sharp, piercing tone or sound; -- said of a sound, or of that which produces a sound.
2. (n.) A shrill sound.
3. (v. i.) To utter an acute, piercing sound; to sound with a sharp, shrill tone; to become shrill.
4. (v. t.) To utter or express in a shrill tone; to cause to make a shrill sound.
Thesaurus Entries
absonant, acute, 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, keen, keening, musicless, nonmelodious, off, off-key, off-tone, out of pitch, out of tone, out of tune, penetrating, piercing, pipe, piping, raucous, reedy, screak, screaky, scream, screech, screeching, screechy, sharp, 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