Idiom idiom
switch on
Meaning
To change one's expression or appearance as if by turning a switch.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
Examples
“She can switch on a smile whenever she sees a camera.”
“The actor was tired, but he managed to switch on his charming stage personality the moment the director shouted action.”
“Despite her internal exhaustion, she could switch on a mask of professional confidence whenever she entered the boardroom to address the investors.”
Anchors to
Last updated August 10, 2026