Deciso

Deciso isola italiana with two main uses. As an adjective, it means determined, resolute, or firm, and it agrees in gender and number with the noun it describes: un uomo deciso, una donna decisa, una scelta decisa. In contexts referring to a decision, the sense often emphasizes firmness or clarity of conclusion.

As the past participle of the verb decidere, deci so is used in compound tenses with the auxiliary avere: ho deciso, hai deciso, abbiamo deciso. When a preceding direct object is present, the participle may agree in gender and number with that object, for example in a sentence like Le ho deciso (I have decided them/it). In ordinary use, however, the form remains invariable in many contexts.

Etymology traces deci so back to Latin decisus, the past participle of decidere, which itself comes from de- (off, apart) and caedere (to cut, to strike). The root conveys the sense of cutting away alternatives to reach a conclusion, which underlies both the adjective and the verbal forms.

Usage notes and nuance: deci so and its feminine/plural variants (decisa, decis, decisi, decise) are common in everyday Italian. The word often appears in phrases like una decisione decisa or una scelta decisa to convey firmness, whereas decisivo and decisione are closely related terms denoting decisiveness or a decisive moment. Deciso as a surname is rare but may occur in Italian-speaking contexts.

See also: decidere, decisione, decisivo, decisione presa.