Language, metaphysics and environmental ethics are specific and universal aspects of culture. Language and critical thinking are phenomenal means of communicating and rationalising environmental and metaphysical issues, among other existential concerns in general. This study argues that language and critical thinking are vehicles of metaphysics and environmental ethics. It also argues that the kind of metaphysics and environmental ethics inherent to a people determine their attitude towards the environment. As some scholars affirm in the literature, this is where continental philosophy comes into environmentalism, because no philosophy is independent of culture and a larger number of environmental issues are peculiar to a place, while a few others obtain across places as universals. Thus, environmentalists look at environmental issues and metaphysical concerns from both specific and general contexts. It is realised that upon giving the issues at stake critical reflections, ethical principles are made or advanced using language constructively to express, disseminate and sustain them across ages. The study concludes that despite being neglected in metaphysical and environmental discourses, language plays a critical role in them, as (mis)representation of the two depends on how language is used to express and disseminate (un)critically constructed thoughts on environment and metaphysics.