IPA: /ˈproʊtɛstər/
KK: /ˈproʊtɛstər/
A person who publicly expresses strong disagreement or opposition to something, often through demonstrations or rallies.
The protesters gathered in the square to voice their concerns about climate change.
Protester → It is formed from "pro-" (meaning for) and "testari" (meaning to witness or testify). A protester is someone who stands up to witness or testify for a cause they support.
Think of someone standing 'for' ('pro-') something they believe in and 'witnessing' ('testari') their beliefs through action.