WordReference English-Spanish Dictionary © 2015:

Principal Translations
estúpido adjadjetivo: Describe el sustantivo. Puede ser posesivo, numeral, demostrativo ("casa grande", "mujer alta"). (tonto) (lacking intelligence)stupid adjadjective: Describes a noun or pronoun--for example, "a tall girl," "an interesting book," "a big house."
  (foolish)silly adjadjective: Describes a noun or pronoun--for example, "a tall girl," "an interesting book," "a big house."
 Es un razonamiento estúpido, no tiene ni pies ni cabeza.
estúpido,
estúpida
nmnombre masculino: Sustantivo de género exclusivamente masculino ("televisor", "piso").
(persona tonta)idiot nnoun: Refers to person, place, thing, quality, etc.
  fool nnoun: Refers to person, place, thing, quality, etc.
  (slang)jerk, boob, cretin nnoun: Refers to person, place, thing, quality, etc.
 Es un estúpido por no comprar la casa cuando estaba en oferta.
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'estupido' found in these entries
In the Spanish description:
English:

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