Having no definite aim or purpose; not sent or guided in a particular direction; made, done, occurring, etc., without method or conscious choice…

Unbound, unattached. In immaterial sense: Unconnected; rambling; disconnected, detached, stray, random. ? Now rare.

Of a single thing: Coming disconnectedly; random.

Erratic, random.

Lacking a plan or aim; unsystematic, directionless, disorganized.