environmentally
adv.in a way that relates to the natural world around us. You use this to describe how actions or products affect the air, water, and land.
adv.in a manner relating to the natural world and the impact of human activity on its health. Often used to modify adjectives that describe the impact of products or policies.
“The company tries to act environmentally.”
“Choosing to travel by train instead of flying is an environmentally responsible way to see the continent.”
“The government is under pressure to ensure that all new infrastructure projects are environmentally sustainable and do not disrupt local biodiversity.”
Typically functions as a modifier for adjectives like 'friendly', 'conscious', or 'sound'.
When modifying an adjective like 'friendly', the adverbial form ending in -ly must be used.
Usage environmentally friendly
“In the Kickstarter example, projects of national scale benefited much more from eco-commitments because they were pitched to a larger and more diverse backer base, including environmentally aware consumers from other states.”
“The researchers argue that presenting an environmentally responsible image has become a vital marketing tool for many businesses.”
From environmental + -ly.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.