obligatory

As adjectives the difference between prohibited and obligatory

is that prohibited is forbidden; unallowed while obligatory is imposing obligation, morally or legally; binding.

As a verb prohibited

is (prohibit).

As adjectives the difference between elective and obligatory

is that elective is while obligatory is imposing obligation, morally or legally; binding.

As adjectives the difference between impulsive and obligatory

is that impulsive is having the power of driving or impelling; giving an impulse; moving; impellent while obligatory is imposing obligation, morally or legally; binding.

As a noun impulsive

is that which impels or gives an impulse; an impelling agent.

As adjectives the difference between indispensable and obligatory

is that indispensable is (ecclesiastical|obsolete) not admitting ecclesiastical dispensation; not subject to release or exemption; that cannot be allowed by bending the canonical rules while obligatory is imposing obligation, morally or legally; binding.

As a noun indispensable

is a thing that is not dispensable; a necessity.

As adjectives the difference between obligatory and desirable

is that obligatory is imposing obligation, morally or legally; binding while desirable is wanted.

As adjectives the difference between obligatory and ordered

is that obligatory is imposing obligation, morally or legally; binding while ordered is in order, not messy, tidy.

As a verb ordered is

(order).

As adjectives the difference between obligatory and undefined

is that obligatory is imposing obligation, morally or legally; binding while undefined is lacking a definition or value.

As an adjective obligatory

is imposing obligation, morally or legally; binding.

As a noun null is

zero, nil; the cardinal number before einn.

Undeniable is a related term of obligatory.

As adjectives the difference between undeniable and obligatory

is that undeniable is irrefutable, or impossible to deny while obligatory is imposing obligation, morally or legally; binding.

Coerced is a related term of obligatory.

As a verb coerced

is (coerce), being forced.

As an adjective obligatory is

imposing obligation, morally or legally; binding.