Word Type

Adjective

Adjective

The word "obligatory" can be used as adjective and adjective.

Word Relationships

Opposites (Antonyms)

optional optional

Derived Terms

disobligatory nonobligatory obligala obligatorification obligatoriness obligatorize unobligatory

Derived From

atory obligate

Related Terms

obligate obligated obligation obligational obligato obligatorily oblige obligee obliger obliging obligingly obligingness obligor

Related Terms

impose legally morally necessary obligate obligated obligation obligational obligato obligatorily oblige obligee obliger obliging obligingly obligingness obligor

Similar Terms

bounden bounden compulsory compulsory de rigueur de rigueur imposed imposed incumbent on incumbent on indispensable indispensable mandatory necessary necessary prerequisite prerequisite required

Synonym Network

bounden compulsory mandatory

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.