tonto.
stupid
Meaning & usage
stupid
¿Estás tonto?
silly, foolish
Where this word comes from
Uncertain. Latin attonitus has been proposed, but there are phonological difficulties, namely unexpected loss of initial /a/ and lack of diphthongization; cf. the expected outcome atuendo. Tonto may have an expressive or onomatopoeic origin. Another hypothesis is that it derives from *tontum, a 'vulgar' past participle for Latin tondeo (“to shear”). Compare Italian tonto, Portuguese tonto, and Romanian tont, tânt, Sicilian ntontu.
a fool, a stupid person
Where this word comes from
Uncertain. Latin attonitus has been proposed, but there are phonological difficulties, namely unexpected loss of initial /a/ and lack of diphthongization; cf. the expected outcome atuendo. Tonto may have an expressive or onomatopoeic origin. Another hypothesis is that it derives from *tontum, a 'vulgar' past participle for Latin tondeo (“to shear”). Compare Italian tonto, Portuguese tonto, and Romanian tont, tânt, Sicilian ntontu.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.