How to Say Stupid in Spanish

How to Say Stupid in Spanish

The direct translation of “stupid” in Spanish is Estúpido (es-TOO-pee-do) — and like the English word, it is a real insult. Spanish offers a whole spectrum from gentle teasing to harsh insults, and choosing the right one matters because tone and gender endings change the meaning.

The Direct Word: Estúpido / Estúpida

Estúpido (masculine) / Estúpida (feminine) — pronounced es-TOO-pee-do / es-TOO-pee-da

Spanish adjectives agree with the gender of the person or noun. Use estúpido for a man or masculine noun and estúpida for a woman or feminine noun. Plurals are estúpidos and estúpidas. The accent on ú tells you the stress lands there: es-TOO-pee-do.

This is an offensive word when aimed at a person — use it knowingly.

Copy the Phrase

The Spanish for stupid is Estúpido (es-TOO-pee-do), feminine Estúpida.

All the Ways to Say Stupid in Spanish

Spanish	Pronunciation	Strength / Meaning
Tonto / Tonta	TOHN-toh / TOHN-tah	Mild — silly, dumb (often playful)
Bobo / Boba	BOH-boh / BOH-bah	Mild — silly, goofy
Estúpido / Estúpida	es-TOO-pee-do / -da	Strong — stupid (real insult)
Idiota	ee-dee-OH-tah	Strong — idiot
Imbécil	eem-BEH-seel	Strong — imbecile
Menso / Mensa	MEN-soh / MEN-sah	Mild — dummy (Mexico)
Qué estupidez	keh es-too-pee-DES	”What stupidity” (about an act)

Register: From Playful to Insulting

• Affectionate / light teasing: “Tonto,” “Bobo,” “Menso” — these can be said warmly between friends or to a child without much sting.
• Clearly insulting: “Estúpido,” “Idiota,” “Imbécil” — aggressive and offensive when directed at a person.
• Describing a thing/idea (not a person): “Eso es una estupidez” (that’s stupid), “Qué tontería” (how silly) — softer because they target the act, not the individual.

None of these belong in formal or professional contexts.

Gender and Number Agreement

Because estúpido is an adjective, it must match the subject:

Form	Use
estúpido	one male / masculine noun
estúpida	one female / feminine noun
estúpidos	group with at least one male
estúpidas	group of all females

The same pattern applies to tonto/tonta, bobo/boba, etc. Note that idiota and imbécil are invariable in gender (el idiota / la idiota).

Pronunciation Tips

• The ú with an accent simply marks the stressed syllable; the vowel sound is still a clean “oo.”
• Spanish vowels never glide: a = “ah,” e = “eh,” i = “ee,” o = “oh,” u = “oo.”
• Roll/tap the r lightly where present.
• The z and soft c are an “s” sound in Latin America and a “th” in much of Spain (estupidez → es-too-pee-DESS or -DETH).

Regional Variations and Cultural Notes

Insults are highly regional in Spanish:

• Mexico: “Menso,” “Tonto,” and the much ruder “Pendejo.”
• Spain: “Tonto,” “Bobo,” and the vulgar “Gilipollas.”
• Argentina/Uruguay: “Boludo” — strongly insulting to strangers but often a casual, even affectionate, term between close friends.

Because some of these swing between playful and offensive depending on tone and relationship, lean on the milder tonto/bobo unless you are certain of the context, and reserve estúpido and idiota for when you truly mean to insult.