adj. Function: adjective
1
Synonyms: NATURAL 5, artless, ingenuous, naive, simple, unaffected, unartificial, unschooled, unsophisticated, untutored
Antonyms: studied
2
Synonyms: EXTEMPORANEOUS , autoschediastic, extemporary, extempore, impromptu, improvised, offhand, spur-of-the-moment, unrehearsed