Also means
advocate
Usage Note
Sostenitore (feminine sostenitrice) refers to a person who supports a cause, team, or candidate. It is stronger than simpatizzante (sympathiser) and implies active backing. In sports contexts it overlaps with tifoso (fan), but sostenitore is preferred in political and formal registers.
Examples
"I sostenitori del partito si sono riuniti in piazza."
Natural Translation
The party's supporters gathered in the square.

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