This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. Present participle of overweigh.

"Myopia includes shortsighted behaviors like overeating or failing to save for retirement; hyperopia entails, as Kivetz put it in the Journal of Consumer Research, “excessive far­sightedness and future-biased preferences, consistently delaying pleasure and overweighing necessity and virtue in local decisions.”"

overweighed    overweighing    overweighs   

overbalance