effetti

Effetti is the plural form of the Italian noun effetto, which denotes a consequence, result, outcome, or influence produced by a cause. The term can refer to natural phenomena, the outcomes of actions, or the impact of policies, events, or processes. In everyday language it is used to talk about positive or negative results, as in effetti positivi or effetti negativi.

In medicine and pharmacology, effetti describes the responses elicited by drugs or therapies, such as effetti collaterali (side effects) or effetti farmacologici (pharmacological effects). In science and general discourse, it can denote physical or observable phenomena, for example gli effetti del cambiamento climatico or gli effetti della gravità.

In law, policy, and economics, the phrase effetti giuridici or effetti economici refers to the legal or financial consequences of acts, regulations, or agreements. In media and the arts, effetti appears in expressions such as effetti speciali (special effects) and effetti sonori (sound effects), describing techniques used to produce illusions or enhance perception. The plural form normally pairs with adjectives in masculine plural (effetti positivi, effetti negativi), while the singular effetto is used when referring to a single outcome. Figuratively, phrases like effetto domino or effetti a catena describe cascading or chain reactions.