IMPROVISATE
Verb
improvisate (third-person singular simple present improvisates, present participle improvisating, simple past and past participle improvisated)
To improvise; to extemporize.
Adjective
improvisate (comparative more improvisate, superlative most improvisate)
unpremeditated; impromptu
Source: Wiktionary
Im*prov"i*sate, a. Etym: [See Improvise.]
Definition: Unpremeditated; impromptu; extempore. [R.]
Im*prov"i*sate, v. t. & i. [imp. & p. p. Improvisated; p. pr. & vb.
n. Improvisating.]
Definition: To improvise; to extemporize.
Source: Webster’s Unabridged Dictionary 1913 Edition