off-the-cuff
UK[ˌɒf ðə ˈkʌf]US[ˌɔːf ðə ˈkʌf]
adj
Spoken or done without any preparation or thought; impromptu.
adv
In a spontaneous, unprepared manner.
Etymology
The phrase 'off-the-cuff' is a 20th-century Americanism derived from the world of public speaking and entertainment. It evokes the image of a speaker improvising notes or remarks hastily written on the stiff cuff of a shirt sleeve, a practice attributed to impromptu after-dinner speakers or comedians. The 'cuff' here refers literally to the end of a shirt sleeve, a word of Germanic origin (related to Old English 'cuffie', meaning glove or mitten). The logic of the phrase hinges on this vivid, literal metaphor: something coming directly 'off' the physical 'cuff' is unscripted, informal, and created in the moment, contrasting with a prepared speech read from formal notes.
Analysis
This is a fixed idiomatic phrase. It is not productively formed from separable morphemes in modern English. The phrase as a whole functions as a compound adjective or adverb.
Examples
He gave a brilliant off-the-cuff speech at the awards ceremony.
She's very good at answering questions off-the-cuff.
The comedian's off-the-cuff remarks were the highlight of the evening.