Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
obligatory | No | Yes | No | No |
indispensable | No | Yes | No | No |
obligatory (adjective) | indispensable (adjective) |
---|---|
morally or legally constraining or binding | not to be dispensed with; essential |
required by obligation or compulsion or convention | absolutely necessary; vitally necessary |
unavoidable |