“Off the cuff” means speaking without preparing your exact words beforehand. You might use it for an unexpected answer, a spontaneous joke, or a short speech you have not rehearsed. It does not necessarily mean you know nothing about the subject.
Where does the expression come from? Its exact origin is uncertain. A common explanation connects it to speakers writing brief reminders on their shirt cuffs. In that story, someone could glance at a cuff for a prompt instead of reading a fully prepared speech. That provides an understandable link to informal, unrehearsed speaking, but the story should not be presented as a firmly proven origin.
In modern English, the expression describes how someone speaks, not anything they actually write on their clothing.
- When the interviewer asked about her hobbies, she answered off the cuff.
- He made an off-the-cuff comment about the new office layout.
Notice the spelling. Use off the cuff without hyphens after a verb, as in answered off the cuff. Before a noun, the words are usually joined with hyphens: an off-the-cuff comment or an off-the-cuff speech.
The expression does not automatically suggest that the words are careless or incorrect. An expert can give a thoughtful answer without rehearsing it. Context tells you whether the spontaneous remark was helpful, funny, awkward, or unwise.