To heal excessively or beyond the point of normal healing, usually resulting in the formation of scar tissue.(verb)
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Use "overheal" in a sentence
"That means by the time your Prayer of Healing is cast, you're only healing one or two raid members (and likely just topping them off) and the rest is overheal."
"On heavy raid damage fights this trinket will shine, but in an alternative situation the proc effect will probably just overheal a lot."
"This is because it's one of the most efficient heals you have. (second only to chain heal hitting 2+ targets w / o overheal) Also, if you crit with it, and none of it is overheal, then someone is also going to get a big ancestral awakening heal."