improviso

Etymology

 * compare 🇨🇬.

Adjective

 * 1)  Not prepared beforehand; unpremeditated; extemporaneous.
 * 2) * a. 1784,, "Improviso Translation of the following lines of M. Benserade A Son Lit"

Etymology 1
.

Noun

 * 1) improvisation act or art of composing and rendering music, poetry, and the like, without prior preparation
 * 2) makeshift a temporary, usually insubstantial, substitution for something else

Etymology 1
From.

Adjective

 * 1) unannounced; out of the blue