deer in the headlights
A person in a mental state of high arousal caused by anxiety, fear, panic, surprise, confusion, or substance abuse.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“He stood there like a deer in the headlights when I asked him.”
“When the teacher called on her unexpectedly, she froze like a deer in the headlights.”
“Caught off guard by the sudden interrogation, the witness stood motionless, looking like a deer in the headlights before the jury.”
From the image of a deer caught in a car's headlights – wide-open eyes, lack of motor reactions, etc.
Last updated August 10, 2026