unexpended balance (noun) nest egg: saved money
Sinonime: backup,
cache, emergency funds, funds,
investment, life savings, mad money,
means, money in the bank, piggy bank,
provisions, rainy day fund,
reserve, reserve fund, reserves,
resources,
savings, savings account, sinking fund, something for a rainy day, something to fall back on, stash, stash, stockpile, unexpended balance