in·co·her·ent 
(ĭn′kō-hîrənt)
(ĭn′kō-hîrənt)adj.
1. Lacking cohesion, connection, or harmony; not coherent: incoherent fragments of a story.
2. Unable to think or express one's thoughts in a clear or orderly manner: incoherent with grief.
in′co·herent·ly adv.
in′co·herent·ness n.