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In some senses, eco is marked as US. Watch for register when choosing this word.
ADJ.
fiscal, smart
The government introduced new eco fiscal policies to reduce carbon emissions across the country.
VERB + ECO
check, like, sound, speaking
Speaking eco-friendly, we switched to reusable bags last year.
ECO + NOUN
credentials, thing, thinker
The company's eco credentials impressed environmental groups and helped boost their sales.