| GREENIE | Slang for an 'environmentalist' (7) |
| ECOLOGY | Field of study for an environmentalist |
| ROUGHIE | NZ and Australian slang for an outsider in a horse or dog race (7) |
| CUPCAKE | Baking item made in a mould; also US slang for an attractive woman (7) |
| ECONUT | Slang derogatory word for an environmentalist (6) |
| ECOFREAK | Derogatory slang word for an environmentalist (8) |
| USELESS | Poor advice from an environmentalist? (7) |
| MAEWEST | American actress whose name became slang for an inflatable life jacket |
| REUSE | One of the three R's for an environmentalist |
| GREENE | Apt surname for an environmentalist |
| ECOL | Coll. major for an environmentalist |
| FUELSPILL | *Concerning event for an environmentalist |
| EVERGREEN | A pine, say, is always there for an environmentalist (9) |
| AGREEMENT | Assent for an environmentalist to hug me at top of tree (9) |
| TREEHUGGER | Metaphorical term for an environmentalist, or literal description of a koala |
| GMAN | Slang for an FBI agent, was also used for some members of the Dublin Metropolitan Police. (1,3) |
| SCHLEP | From Yiddish for "haul, lug", slang for an arduous or tedious journey; or, a clumsy inept person or "drag" (6) |
| CRONY | From "long-lasting", Cambridge University slang for an old friend or contemporary, similar to Oxford's "chum", hence a word for any close or trusted companion or pal (5) |
| ERK | RAF slang for an aircraftman; or, an interjection of trepidation (3) |
| LOOIE | Slang for an officer |
