Cautious.
Tending to resist change or innovation.
The curriculum committee at this university is extremely conservative.
Based on pessimistic assumptions.
At a conservative estimate, growth may even be negative next year.
Supporting some combination of fiscal, political or social conservatism.
Relating to the Conservative Party.
Neither creating nor destroying a given quantity.
Having power to preserve in a safe or entire state, or from loss, waste, or injury; preservative.
Relating to Conservative Judaism.
(clothing) Conventional, traditional, and moderate in style and appearance; not extreme, excessive, faddish, or intense.
Not including any operation or intervention (said of a treatment, see conservative treatment)