environmentalist
//ɪnˌvaɪrənˈmɛntəlɪst//
Noun
environmentalistSingular
environmentalistsPlural
1
A person who is concerned with protecting and preserving the natural environment, often through activism or advocacy.
The environmentalist organized a campaign to protect the local forest.
2
A person who supports or works for the protection of the environment from pollution and other threats.
The environmentalist spoke about the importance of protecting forests.