noun Slang: Often Disparaging.
a zealous or overly zealous environmentalist or preservationist.
Origin of ecofreak
This term is often used with disparaging intent, as shown in contexts where the person is being described as too extreme, hypocritical, impractical, etc.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019