extant
— Adjective
– English
~ still in existence; not extinct or destroyed or lost; "extant manuscripts"; "specimens of graphic art found among extant barbaric folk"- Edward Clodd
extemporaneous
— Adjective
– English
~ with little or no preparation or forethought; "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"
extemporaneously
— Adverb
– English
~ without prior preparation; "he spoke extemporaneously"
extemporarily
— Adverb
– English
~ without prior preparation; "he spoke extemporaneously"
extemporary
— Adjective
– English
~ with little or no preparation or forethought; "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"
extempore
— Adverb
– English
~ without prior preparation; "he spoke extemporaneously"