1. (informal, often derogatory) a conservationist or Green campaigner

Encyclopedia: Greenie

• Fast of the Firstborn
• fast one
• fast reactor
• fast time scale
• fast track
• fast-breaking
• fast-flying
• fast-footed
• fast-growing
• fast-paced
• fast-talk
• fastback
• fastball
• fasten
• fasten on
• fastened
• fastener
• fastening
• faster
• fastest
• fastidious
• fastidiously
• fastidiousness
• fastigiate
• fasting