IPA: /ɪˈlɒdʒɪk/
KK: /ɪˈlɑdʒɪk/
A state or quality where reasoning is not logical or rational.
The illogic of his argument made it hard to take him seriously.
Illogic → It is formed from "il-" (meaning not) and "logic" (from Greek "logikē", meaning reasoning or the science of reasoning). The word "illogic" refers to a lack of reasoning or something that does not follow logical principles.
Think of 'not' ('il-') combined with 'reasoning' ('logic') to remember that illogic means something that lacks proper reasoning.