An affeerment is a legal act of affeering, confirming or assuring, such as in the market value of something.
An affeerer is a person who affeers - who confirms something, or who reduces an arbitrary penalty.
There are 788 in Webster's Second International. Here's a small sample: grep -xE '([^e]*e){3}[^e]*' /usr/share/dict/words |grep ^........$ abeltree Aberdeen abietene absentee Acemetae acheweed aesthete aethered affeerer aftereye agueweed aiseweed Alberene antecede appellee arrestee assessee axletree ayegreen Baedeker bargeese beanweed beaupere beavered bebelted bebreech bedeafen beebread beefhead beefless beehouse beetrave beferned befetter befezzed begetter begrease beheader behearse