fly off the handle
Meaning
To suddenly lose your temper and react angrily or irrationally.
Origin
From an axe head or similar tool head flying off its handle if the fit is loose—an abrupt, dangerous, uncontrolled event, likened to sudden anger.
Notes
Suggests a sudden, uncontrolled outburst, often implying overreaction. Common in informal speech; can sound critical or judgmental when describing someone’s behavior.
Examples
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He tends to fly off the handle when the schedule changes at the last minute.
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She flew off the handle after reading the rude email and sent an angry reply.
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Don’t fly off the handle—let’s hear what happened before we decide anything.
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My dad flew off the handle when he saw the dent in the new car.
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If you fly off the handle in meetings, people will stop sharing ideas with you.
Grammar & Usage Notes
Fixed phrase: typically “fly/flew off the handle.” Subject is the person who gets angry. Often followed by “at/when/over” to mark the trigger. Limited variation (rarely “go off the handle”).
Synonyms
- lose your temper
- blow up
- go ballistic
- hit the roof
- see red
- lose it
Antonyms
- keep your cool
- stay calm
- keep your composure
- remain level-headed