What is the meaning of illgical?

"Illgical" is not a real word in the English language. It's likely a misspelling of "illogical".

Illogical means lacking logic or reason. It describes something that doesn't make sense or follows a faulty line of thinking.

Here are some examples:

* "It's illogical to believe that the earth is flat."

* "The plot of the movie was so illogical, I couldn't follow it."

* "His argument was full of illogical leaps and assumptions."