Adlib

Part of speech: verb

Definitions

1. To perform or speak without a script, relying solely on one's creativity and spontaneity while engaging with an audience
2. To express or perform without prior preparation, creating content spontaneously during interaction
3. To deliver words or actions on the spot without a predetermined script or plan

Etymology: The phrase "ad libitum" is Latin, meaning "at pleasure" or "as one wishes," built from "ad" ("to, at") and "libitum," the past participle of "libere" ("to please"). Musicians adopted it for passages that a performer could play freely, without a fixed score. Over time the Latin phrase was shortened to "ad lib," and that shortened form was later used as a verb meaning to improvise a speech, a performance, or a piece of music on the spot. The spelling "adlib" is simply the run-together version of that abbreviation, with the space removed. It keeps the same meaning: a speaker who ad libs has nothing scripted and is simply following the moment. The verb has kept the sense of performing without rehearsal, which is the same freedom the original musical direction gave to the player.

Synonyms: improvise, extemporize, invent, contrive, create

Antonyms: script, plan, rehearse, prepare, organize