Definitions of obligatory

1. OBLIGATORILY.

2. required by obligation or compulsion or convention; " he made all the obligatory apologies"

3. Morally or legally binding; imposed by law, duty, etc.

4. Binding: imposing duty.

5. Binding; compulsory.

6. Of a nature to impose obligation.

7. Binding in law or conscience.

8. Imposing duty; binding in law or conscience; coercive.