Synonyms: unprepared
Definition: without preparation; not prepared for
Usage: unprepared remarks; the shock was unprepared; our treaty makers approached their immensely difficult problems unprepared- R.E.Danielson
Similar words: unrehearsed, impromptu, extemporaneous, extemporary, extempore, off-the-cuff, offhand, offhanded, ad-lib
Definition: with little or no preparation or forethought
Usage: his ad-lib comments showed poor judgment; an extemporaneous piano recital; an extemporary lecture; an extempore skit; an impromptu speech; offhand excuses; trying to sound offhanded and reassuring; an off-the-cuff toast; a few unrehearsed comments
Similar words: spur-of-the-moment
Definition: in response to an unforeseen need
Usage: a spur-of-the-moment party