aimlessly wandering.

taking an irregular course; straggling

a rambling brook.

spread out irregularly in various directions

a rambling mansion.

straying from one subject to another; desultory

a rambling novel.

adjective

connected , direct , straightforward , straight

adjective

circuitous , confused , desultory , diffuse , digressive , discursive , disjointed , incoherent , incongruous , irregular , long-winded , periphrastic , prolix , at length , covering , gangling , here and there , random , scattered , spreading , straggling , strewn , trailing , unplanned , excursive , parenthetic , parenthetical , tangential , cursory , disconnected , lengthy , meandering , rolling , roving , sprawling , wandering , wordy