1. (adj) shrill, sharp
having or emitting a high-pitched and sharp tone or tones
Synonyms: abrupt, shrill, astute, sharp, incisive, shrewd, knifelike, crisp, keen, needlelike, strident, discriminating, tart, sharp-worded, precipitous, acute, acuate, penetrating, piercing, penetrative
Antonyms: pleading, colourless, low, beseeching, imploring, low-pitched, colorless
2. (adj) strident, shrill
being sharply insistent on being heard
Synonyms: raucous, shrill, sibilant, strident, clamorous, clamant, blatant, sharp, vociferous, continuant, fricative, spirant
Antonyms: colorless, imploring, pleading, low-pitched, beseeching, low, colourless
3. (verb) shrill
of colors that are bright and gaudy
Synonyms: strident, sharp
Antonyms: imploring, colourless, beseeching, pleading, low, colorless, low-pitched
4. (verb) shriek, shrill, pipe up, pipe
utter a shrill cry
Synonyms: shriek, pipe, shrill, pipe up
Antonyms: colourless, low-pitched, pleading, imploring, low, beseeching, colorless
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Synonyms and Antonyms of shrill 
