illogical Meaning, Definition & Usage

  1. adjective lacking in correct logical relation
    unlogical.
  2. adjective satellite lacking orderly continuity
    disordered; disconnected; garbled; scattered; confused; disjointed; unconnected.
    • a confused set of instructions
    • a confused dream about the end of the world
    • disconnected fragments of a story
    • scattered thoughts

WordNet

Il*log"ic*al adjective
Definitions
  1. Ignorant or negligent of the rules of logic or correct reasoning; as, an illogical disputant; contrary of the rules of logic or sound reasoning; as, an illogical inference. -- Il*log"ic*al*ly, adv. -- Il*log"ic*al*ness, n.

Webster 1913