adjective
Synonyms: extemporaneous , auto-schediastic, extemporary, extempore, impromptu, improvised, offhand, unrehearsed, unstudied
adjective
Synonyms: extemporaneous , auto-schediastic, extemporary, extempore, impromptu, improvised, offhand, unrehearsed, unstudied
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003