conservativecon·ser·va·tive /kənˈsɜːvətɪv-ɜːr-/ adjectiveadj1careful to avoid taking risksHe would be better taking a conservative approach to his new mortgage and opting for a fixed rate.
2careful not to state a value or amount to be bigger or smaller than it actually might beFor the purposes of our valuation we have used a conservative forecast of £8 million.
Realization of the asset would bring in, at a conservative estimate, around £15,000 extra income.