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1. Having or making a high-pitched sound such as that made by a mouse or a rusty hinge
   "Squeaking sand yields a harsh, shrill squeak";
   - screaky, screechy, squeaky, squealing

1. Make a high-pitched, screeching noise
   "My car engine makes a squeaking noise";
   - whine, screech, creak, screak [dialect], skreak [non-standard]
    
2. [informal] Give away information about somebody
   - denounce, tell on, betray, give away, rat [informal], grass, shop [informal], snitch [informal], stag

See also: high, high-pitched

Type of: inform, make noise, noise, resound

Encyclopedia: Squeak