Main entry: digressive, discursive, rambling, excursive
Definition: (of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects
Usage: amusingly digressive with satirical thrusts at women's fashions among other things; a rambling discursive book; his excursive remarks; a rambling speech about this and that
Main entry: dianoetic, discursive
Definition: proceeding to a conclusion by reason or argument rather than intuition