1530s (late 15c. in Anglo-Latin), from Old French debatable (Modern French débattable), from debatre (see debate (v.)). Earliest references were to lands claimed by two nations; general sense is from 1580s.
1. It is debatable whether or not antibiotics would make any difference.
2. It is highly debatable whether conditions have improved for low-income families.
3. This is a highly debatable point.
4. Whether older women miscarry more often or whether they report more miscarriages is a debatable point.
5. Whether we can stay in this situation is debatable.