extemporaneous Synonyms

impromptu offhanded extempore extemporary offhand unrehearsed off-the-cuff unprepared unpremeditated informal extemporaneously ex tempore off-hand unplanned not rehearsed thrown off shot from the hip dashed off according to pleasure as one thinks best as one wishes unscripted unprompted undevised unarranged ad lib voluntary haphazard extemporized extemporal concoctive casual candid autoschediastic automatic hasty impetuous improvisatory unstudied spontaneous snap makeshift instinctive impulsive improviso improvised ad libitum