Synonyms of the word

desultory

• adj. Jumping, or passing, from one thing or subject to another, without order, planning, or rational connection;…
• adj. Out of course; by the way; as a digression; not connected with the subject.
• adj. Disappointing in performance or progress.
• adj. (obsolete) Leaping, skipping or flitting about, generally in a random or unsteady manner.

purposeless

• adj. Without purpose.