overrich

adjective

over·​rich ˌō-vər-ˈrich 

: excessively rich

overrich desserts

overrich wines

His travel writings are full of horror at disgusting food, foul lodgings, overrich insect life.

—Anthony Burgess

An overrich fuel mixture is a mixture that doesn't contain sufficient oxygen to burn completely.

—Popular Mechanics Complete Car Repair Manual

Word History

First Known Use

15th century, in the meaning defined above