How to Say "unreasoning" in Spanish
The Spanish word for “unreasoning” is “ciega” — A2 level. This is a very common word in everyday Spanish.

Examples
Mi abuela es ciega de nacimiento.
My grandmother has been blind since birth.
Actuó movida por una rabia ciega.
She acted driven by a blind (unthinking) rage.
Necesitas una cita ciega para conocer gente nueva.
You need a blind date to meet new people.
Gender Matching
As an adjective, 'ciega' must match the feminine person or thing it describes. If you were describing a man, you would use 'ciego'.
Confusing Adjective and Noun
Mistake: “Using 'la ciega' when you mean 'la mujer ciega'.”
Correction: While 'la ciega' is correct (Definition 2), it is often more polite and descriptive to use 'persona ciega' or 'mujer ciega' if you are referring to the characteristic, not the person as a noun.
Related Translations
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