1
general::
Phrase(s): speak off-the-cuff
Fig. to speak without preparing a speech; to speak extemporaneously; to render a spoken opinion or estimate. (As if one’s notes had been written hastily on one’s cuff.) • She is capable of making sense and being convincing even when she speaks off-the-cuff. • I find it very difficult to speak off-the-cuff.
McGrawhill's American Idioms And Phrasal Verbs