Desultory /(?)/

Des·ul·to·ry

Desultory

a.
  1. Leaping or skipping about. [Obs.]
    I shot at it [a bird], but it was so desultory that I missed my aim.
    — Gilbert White.
  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.
    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.