extemporaneous

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extemporaneous

, extemporary
spoken, performed, etc., without planning or preparation; impromptu; extempore
References in periodicals archive ?
Still, extemporaneity and profound thoughts are at best uneasy companions.
Grider's palette is full spectrum, his juxtapositions a blend of purpose and extemporaneity.
In contrast with the evanescence, extemporaneity and immediacy of spoken discourse, written language is relatively permanent (can be preserved through time and space, and analyzed, manipulated, etc), usually planned, typically not situated (readers and writers are not usually co-present), and unable to rely on extra-linguistic context (Chafe, 1994).