How to Say "thoughtless" in Spanish
The Spanish word for “thoughtless” is “aturdido” — B2 level.
English → SpanishB2
adjectiveB2informal
acting without thinking

Examples
¡Qué aturdido eres! Has vuelto a olvidar las llaves.
How scatterbrained you are! You've forgotten the keys again.
No seas aturdido y lee las instrucciones primero.
Don't be thoughtless and read the instructions first.
Su comportamiento aturdido le causó muchos problemas.
His reckless behavior caused him many problems.
Describing Personality
When you use 'ser' with aturdido, you are saying the person is naturally scatterbrained or clumsy in their thinking.
Confusing with 'Stupid'
Mistake: “Using it to mean 'dumb'.”
Correction: Aturdido means lack of focus or thinking, not lack of intelligence.
Related Translations
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