This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. The commission of usually illegal acts of sabotage motivated by environmentalism.

"That evening, on the set of a public-television book show, T.C. Boyle talked about how he has a certain admiration for acts of "ecotage," but in his fiction he tries to show both sides of the story."

ecoteur   

ecodefence    monkeywrenching