Im*prov"i*dent*ly (?), adv. In a improvident manner. "Improvidently
rash." Drayton.
Im*prov"ing (?), a. Tending to improve, beneficial; growing better. --
Im*prov"ing*ly, adv.
Improving lease (Scots Law), an extended lease to induce the tenant to
make improvements on the premises.
Im*prov"i*sate (?), a. [See Improvise.] Unpremeditated; impromptu;
extempore. [R.]
Im*prov"i*sate (?), v. t. & i. [imp. & p. p. Improvisated (?); p. pr. &
vb. n. Improvisating (?).] To improvise; to extemporize.
Im*prov`i*sa"tion (?), n. [Cf. F. improvisation.] 1. The act or art of
composing and rendering music, poetry, and the like, extemporaneously;
as, improvisation on the organ.