On cue
Meaning
Exactly at the right moment, especially as if in response to an unspoken signal or expectation.
Origin
Imagine the bustling energy of an Elizabethan theatre, actors sweating under the lights, desperately trying to remember their lines. Back then, prompters stood ready in the wings, often marking their scripts with the letter 'Q'—shorthand for the Latin 'quid,' meaning 'what,' indicating the start of an actor's line. When a performer delivered their dialogue or action at precisely the right moment, without needing this whispered 'Q' from the prompter, they were said to be performing 'on cue.' This perfect theatrical timing, crucial for a seamless play, soon leaped from the stage into everyday conversation to describe anything happening at the exact, anticipated moment.
Examples
- Just as I was about to mention him, John walked in, perfectly on cue.
- The rain started on cue, right after the outdoor ceremony concluded.