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1.
(v.) To congratulhate: To express fake joy for the achievement or good fortune of (another).

John congratulhated Jack for making partner (before him) at the firm.
by benjil March 06, 2008
 
2.
(supplemental definition, please see original by benji)

CongratulHate=1/schadenfreude
Or, the inverse of Schadenfreude.
Clooney congratulhates Daniel Day-Lewis on his Oscar win for best actor.
by chezmiko March 23, 2008