freezes up

Becomes suddenly immobile

To freeze up is to become suddenly unable to act or speak, typically from fear, anxiety, or pressure: I knew the answer but froze up during the presentation.

The phrase also describes mechanical failure—an engine or computer that freezes up stops working, usually from overheating or a system error: My laptop freezes up whenever I run too many programs.

Related

overwhelm · lock-up · stage fright · performance anxiety · deer in headlights · buffering · indecision · fear · solidification · anxiety · fight or flight · mental block · drawing a blank · deadlock · hesitation · overheating · dread · unfreeze

Opposites
mechanical/system function

freezes upthaws out

unfreezes · melts · defrosts · thaws · liquefies

psychological/social response

freezes upkeeps it together

Maintains emotional stability

loosens up · thinks on one's feet · flows · relaxes · takes action

Family

freeze, freezes, froze, frozen, freezing, freezer, freezers, antifreeze, deep-freeze

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G