Other forms: glitchier; glitchiest
Something that's glitchy malfunctions on and off, making it unreliable. Your glitchy old laptop will eventually need to be replaced if you're trying to use it for school work.
Computer programs and electronic devices are bound to be glitchy from time to time, with small bugs or other temporary faults that cause brief problems. In a glitchy video game, characters may suddenly look distorted or controls might stop working correctly. Glitchy is from glitch, a 1940s radio term meaning "mistake," possibly rooted in the Yiddish glitshn, "to slip."