Synonyms and Antonyms for mandatory

1. mandatory (adj.)

required by rule

Synonyms:

obligatory
required
compulsory

Antonyms:

optional

2. mandatory (n.)

a territory surrendered by Turkey or Germany after World War I and put under the tutelage of some other European power until they are able to stand by themselves

Synonyms:

district
dominion
mandate
territory
territorial dominion

3. mandatory (n.)

the recipient of a mandate

Synonyms:

recipient
mandatary
receiver