Antonyms of noun illogicalness

1 sense of illogicalness

Sense 1
illogicality, illogicalness, illogic, inconsequence -- (invalid or incorrect reasoning)
       Antonym of logicalness (Sense 1)
      => logicality, logicalness -- (correct and valid reasoning)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun illogicalness

1 sense of illogicalness

Sense 1
illogicality, illogicalness, illogic, inconsequence -- (invalid or incorrect reasoning)
       => quality -- (an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare)