ETYMOLOGY
from over- (prefix) + money; humorous usage after undermine (to work secretly or stealthily against)
EXAMPLE
“…At Preston in Andernesse, August 17. 1648. Duke Hambleton resolving to play an Aftergame of Loyalty, entred England with an Army more numerous then well Disciplined. Most beheld him as one rather cunning than wise, yet rather wise, than valiant. However he had Officers who did Ken the War-craft, as well as any of our Age. He would accept of no English Assistance, so to engrosse all the work and wages to himself. Some suspect his Officers trust was undermined, (or over-moneyed rather) whilst others are confident, they were betrayed by none save their own security. …”
From: The History of the Worthies of England
By Thomas Fuller, a1661
Lexicophilia 