greener

Etymology

adj

1. comparative form of green: more green
   Her crimson dress inflames grey corridors, or flaring in a sunshaft through high branches makes of the deep green shadows a greenness darker yet, and a darkness greener. 1950, Mervyn Peake, Gormenghast
   DBC Head of Sales Roger Neary added: "Rail freight is already a much greener alternative to road haulage, so to reduce our carbon footprint even further will, I hope, make businesses re-evaluate their own transport strategies." January 27 2021, “Network News: Hydro-treated Vegetable Oil performs well in DBC tests”, in RAIL, issue 923, page 11

noun

1. (slang, derogatory) A newcomer; a recent immigrant.
2. (slang, derogatory) A person with a passion for protecting the natural environment; an ecological activist.
3. Agent noun of green; someone or something which greens.