improvise

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im·pro·vise / ˈimprəˌvīz/ • v. [tr.] create and perform (music, drama, or verse) spontaneously or without preparation: the ability to improvise operatic arias in any given style | [intr.] he was improvising to a backing of guitar chords | [as adj.] (improvised) improvised humor. ∎  produce or make (something) from whatever is available: I improvised a costume for myself out of an old blue dress | [as adj.] (improvised) we camped out, sleeping on improvised beds. DERIVATIVES: im·prov·i·sa·tion / imˌpräviˈzāshən/ n.im·prov·i·sa·tion·al / imˌpräviˈzāshənl/ adj.im·prov·i·sa·to·ri·al / imˌprävizəˈtôrēəl/ adj.im·pro·vi·sa·to·ry / imˈprävizəˌtôrē/ adj.im·pro·vis·er n.