English adjective: obligatory | |||
| 1. | obligatory morally or legally constraining or binding | ||
| Samples | Attendance is obligatory. An obligatory contribution. | ||
| Similar | bounden, compulsory, de rigueur, imposed, incumbent on, indispensable, mandatory, prerequisite, required | ||
| See also | necessary | ||
| Antonyms | optional | ||
| 2. | obligatory required by obligation or compulsion or convention | ||
| Samples | He made all the obligatory apologies. | ||
| Similar | necessary | ||
| Antonyms | unnecessary, unneeded | ||