ENGLISH
REFERENCE

illogical

adj.
B2 Upper Intermediate US //ˌɪˈɫɑdʒɪkəɫ// UK //ɪlˈɒdʒɪkəl// il·log·i·cal

adj. not making sense or not following clear thinking. You use this to describe an idea or action that does not have a good reason behind it.

adj. lacking sense or sound reasoning; contrary to the principles of logic. Often used to describe arguments, decisions, or behaviors that fail to follow a rational sequence.


SIMPLE

It is illogical to buy a car if you cannot drive.

CONTEXTUAL

The manager's decision to cut the marketing budget during a sales slump seemed completely illogical to the team.

COMPLEX

While the protagonist's actions may appear illogical at first glance, they are driven by a deep-seated emotional trauma that bypasses rational thought processes.

Synonyms
Antonyms
Origin

From il- + logical.

Usage

Often used predicatively after linking verbs like 'seem', 'sound', or 'be'.

Pitfall

His argument was unlogical.His argument was illogical.The correct prefix for 'logical' is 'il-', not 'un-'.

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