adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Not obligatory. not-comparable

Adjective

1. 1
   not required by rule or law wordnet

Synonyms

All synonyms

avoidablenonbinding agreementnonmandatory

Antonyms

All antonyms

academic honesty obligationbinding legal rule

Etymology

From non- + obligatory.