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glitch |glɪtʃ| informal
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noun
a sudden, usually temporary malfunction or fault of equipment:
a draft version was lost in a computer glitch.
• an unexpected setback: the only glitch in his year is failing to
qualify for the Masters.
• Astronomy a brief irregularity in the rotation of a pulsar.
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verb [ no obj. ] chiefly US
suffer a sudden malfunction or fault: the elevators glitched.
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ORIGIN 1960s (originally US): of unknown origin. The original
sense was ‘a sudden surge of current’, hence ‘malfunction,
hitch’ in astronautical slang.
Oxford Dictionary of English