off the cuff —(coll.)
1. speak unofficially or informally:
- Even when she spoke off-the-cuff to the audience, she did so at the keyboard, improvising over a drizzle of piano notes.
2. do smth. immediately; without consideration:
- I was not agreeing off the cuff that Bill’s getting into the Royal would necessarily enhance his prospects.
on the cuff —(coll.) on credit:
- Money was not important at all. All business was transacted on the cuff.