under-investment ˌunder-inˈvestment also underinvestment noun [uncountable]
• We've heard complaints of under-investment in railways, and over-reliance on road building.
— under-invest verb [intransitive] :
• Some small firms under-invest in long-term projects which take many years before they yield a positive return.
— compare over-investmentFinancial and business terms. 2012.