the act of investing more money in something than is needed:
• Companies which have done badly have paid the penalty of over-investment in plant and materials.
— over-invest verb [intransitive] :
• Water companies fear that they are being made to over-invest in environmental clean-up operations.
— compare under-investment* * *
over-investment UK US (also overinvestment) noun [U]
► ECONOMICS, FINANCE a situation in which too much money is invested in a particular activity or economy: »
Years of over-investment have left the region with more factories making chips than the global economy can sustain.
Financial and business terms. 2012.