10 letters · 16 points in Scrabble
adjective proceeding to a conclusion by reason or argument rather than intuition
adjective (of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects
originBorrowed from Middle French discursif, formed from the stem of Latin discursus and the suffix -if, and in part borrowed from Medieval Latin discursivus. By surface analysis, discourse + -ive.
Etymology from Wiktionary, CC BY-SA 3.0