off-the-cuffприлагательное Used to describe something done or said without prior preparation.
She made an off-the-cuff comment that surprised everyone.
Она сделала импровизированное замечание, которое удивило всех.
Modifies a verb to indicate that the action is performed spontaneously.
He spoke off-the-cuff during the interview.
Он говорил экспромтом во время интервью.