Illogicality

Part of speech: noun

Definitions

1. The state of exhibiting a lack of rational thought manifests in arguments or behaviors that do not adhere to logical principles or reasoning
2. A characteristic of thoughts or actions showing inconsistency with established reasoning reveals a breakdown in coherence and sense
3. The quality of being unreasonable is evident in actions or statements that fail to follow logical principles or sound reasoning

Etymology: "Illogicality" is a plain English formation: the adjective "illogical" with the noun-forming suffix "-ity" (from Latin "-itas"). "Illogical" itself is built from "logical", which comes from Latin "logicus" and Greek "logikos", meaning "reasoning" or "of reason", and the prefix "il-" (a form of "in-", meaning "not") that appears before words beginning with "l". The base "logic" traces back to Greek "logos", a word with a wide range of senses including "word", "speech", "account" and "reason". The pattern is a useful one to see at work. English has many pairs like "rational" and "irrational" or "legal" and "illegal", where the negative prefix is attached to a root that is already in the language. "Illogicality" therefore adds a second layer of abstraction on top of "illogical" to name the quality itself rather than the trait or the statement.

Synonyms: irrationality, incoherence, absurdity, fallacy, unreasonableness

Antonyms: logic, rationality, reason, clarity, coherence