autoschediastic

ad hoc ad-lib automatic by ear casual expedient extemporary extempore fake free immediate impromptu improv improvisatory improviso informal jamming made-up makeshift offhand on impulse on-the-spot snap spontaneous spur-of-the-moment toss off toss out unplanned unpremeditated unprepared unrehearsed unstudied winging it

deliberate planned premeditated prepared rehearsed

impromptu makeshift spontaneous

ad-lib extemporized

Band-Aid extemporaneous extempore fly-by-night hit-or-miss improviso offhand spur-of-the-moment unprepared unrehearsed unstudied

designed planned premediated rehearsed

ad hoc ad-lib automatic by ear casual expedient extemporary extempore fake free immediate impromptu improv improvisatory improvised improviso informal jamming made-up makeshift offhand on impulse on-the-spot snap spontaneous spur-of-the-moment toss off toss out unplanned unpremeditated unprepared unrehearsed unstudied winging it

ad hoc ad-lib automatic by ear casual expedient extemporary extempore fake free immediate impromptu improv improvisatory improvised improviso informal jamming made-up makeshift offhand on impulse on-the-spot snap spontaneous toss off toss out unplanned unpremeditated unprepared unrehearsed unstudied winging it