One who conserves.

(transitive) To save for later use, sometimes by the use of a preservative. / (transitive) To protect an environment, heritage, etc.

Wilderness where human development is prohibited. / A jam or thick syrup made from fruit.

simple past tense and past participle of conserve

Of or relating to something to which conservation has been applied; saved from being wasted

(nonstandard, non-native speakers' English) Conservation (condition of being conserved).

plural of conservancy

Accompanied by conservation.

present participle of conserve

Cautious, moderate. / Tending to resist change or innovation. / Based on pessimistic assumptions.