oversave
/əvəˈseɪv/Definitions
1. verb
to save too much money, especially to the point of depriving oneself of necessities or comforts
“The couple oversaved for their retirement, leaving little money for travel and entertainment.”
2. noun
an excessive amount of money saved, especially one that is considered excessive or unnecessary
“Their oversave was so large that they had to find ways to spend it on luxury items.”