Simple past tense and past participle of overinvest.(verb)
Subject to excess levels of investment(adjective)
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Use "overinvested" in a sentence
"It was a growth model where we overinvested in the most unproductive form of capital, meaning housing."
"Suffice it to say that former Minister Jalali defended Karzai's government as the only game in town, and I took an opposite view -- suggesting that we had overinvested in Karzai and Afghanistan, which was now trapping and containing American power rather than further leveraging it in the region."
"It shouldn't have been that surprising given how much they overinvested in real estate, but it is a potential shot across the bow for an even bigger sovereign bond problem or refinancing issue."