costieri

Costieri is an Italian term derived from costiero, meaning related to or situated on the coast. The plural masculine form is costieri and the feminine plural is costiere; the singular forms are costiero (masculine) and costiera (feminine). The word is used both as an adjective and as a noun.

As an adjective, costieri describes things connected with the coastal zone. It can modify nouns to indicate a coastal character or location, as in zone costiere (coastal zones), littorali costieri (coastal littorals), or infrastrutture costiere (coastal infrastructure). The feminine form costiere is used with feminine nouns, for example regioni costiere.

As a noun, costieri often refers to people who live along the coast or coastal communities. In demographic or geographic texts, i costieri denotes coastal inhabitants and their regional culture, economy, and practices tied to the sea.

In geographic naming, costiera appears as a toponym in several contexts. The term Costiera is part of well-known designations such as Costiera Amalfitana, the Amalfi Coast, which uses costiera to denote a coastal region rather than a population. The singular form is also used in other coastal names and in broader geographic descriptions of shorelines.

Costieri can also occur as an Italian surname. As with many place- or feature-related terms, it may appear in historical records or contemporary names without implying a specific meaning beyond its origin.