Desultory
Desultory , adjective
[Latin desultorius, from desultor a leaper, from desilire, desultum, to leap down; de + salire to leap. See Saltation.]
1.
Leaping or skipping about. [Obsolete]
I shot at it [a bird], but it was so desultory that I missed my aim.
2.
Jumping, or passing, from one thing or subject to another, without order or rational connection; without logical sequence; disconnected; immethodical; aimless; as, desultory minds. — Atterbury
He [Goldsmith] knew nothing accurately; his reading had been desultory.
3.
Out of course; by the way; as a digression; not connected with the subject; as, a desultory remark.