| chirr | (verb) make a vibrant noise, of grasshoppers or cicadas | - |
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| chirrup | (noun) a series of chirps | Synonyms: twitter |
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| (verb) make high-pitched sounds | Synonyms: cheep, chirp, peep |
| shirr | (verb) bake (eggs) in their shells until they are set | - |
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| shirring | (noun) baking shelled eggs | - |
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| whirr | (noun) sound of something in rapid motion | Synonyms: birr, whir, whirring |
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| (verb) make a vibrant sound, as of some birds | Synonyms: churr |
| (verb) make a soft swishing sound | Synonyms: birr, purr, whir, whiz, whizz |
| whirring | (adjective) like the sound of rapidly vibrating wings | - |
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| (noun) sound of something in rapid motion | Synonyms: birr, whir, whirr |