illogical

• Qui n'est pas conforme à la logique ou à la raison ; qui manque de sens, de cohérence ou de justification rationnelle, souvent en parlant d'un raisonnement ou d'une action.

Describes something that is contrary to the rules of logic or reason; lacking sense or clear, sound reasoning.

1. Contrary to logicB2formal

   Lacking correct logical relation; not following the principles of sound reasoning.

   Contraire à la logique

   • His argument was completely illogical and full of contradictions.
   • It is illogical to claim that all birds can fly when penguins cannot.
   • She pointed out the illogical steps in his reasoning.

   Synonymesabsurderroneousfallaciousfaultygroundlessinconsistentinvalidirrationalnonsensicalspeciousunreasonableunsounduntenable

   Antonymescoherentlogicalrationalreasonablesound

2. Lacking coherenceB2formal

   Lacking orderly continuity; not making sense in a connected way.

   incohérent, manquant de logique

   • The plot of the movie was illogical and hard to follow.
   • His speech was disjointed and illogical, jumping from one topic to another.
   • The report had an illogical structure that confused the readers.

   Synonymesdisconnecteddisjointedincoherentinconsistentramblingunconnected

   Antonymescoherentconsistentlogicalrationalsound

3. Unreasonable or senselessB1informal

   Contrary to common sense or reason; not sensible.

   Contraire au bon sens

   • That's an illogical decision given the current circumstances.
   • It seems illogical to spend so much on a broken car.
   • Don't be illogical – we need a clear plan to succeed.

   Synonymesabsurdfoolishirrationalnonsensicalpreposteroussenselessunreasonableunsound

   Antonymeslogicalrationalreasonablesensiblesound