Synonyms of autoschediastic

2 Syllables
bandaid, band-aid, offhand, ad-lib
3 Syllables
spontaneous, unstudied, makeshift, impromptu, fly-by-night, hit-or-miss, off-the-cuff
4 Syllables
improviso, improvised, unprepared, unrehearsed, extempore
5 Syllables
spur-of-the-moment, extemporized, extemporaneous
6 Syllables
improvisatory