the surroundings or conditions in which a person, animal, or plant lives or operates. "survival in an often hostile environment" synonyms: habitat, territory, domain, home, abode, surroundings, conditions, environs, circumstances the natural world, as a whole or in a particular geographical area, especially as affected by human activity. "the impact of pesticides on the environment" synonyms: the natural world, nature, the living world, the world, the earth, the ecosystem, the biosphere, Mother Nature, Gaia, wildlife, flora and fauna, the countryside, the landscape