6 entries under obligatory topic. ×

11
compulsory
11
necessary
8
binding(adjective, duty)
5
compelling
4
constrained(important, subject, accountable)
3
urgent
11 years ago|6.2k views|share |citing 
APASmart Define. (2015). incumbent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/incumbent/thesaurus/synonyms
ChicagoSmart Define. 2015. "incumbent thesaurus" https://smartdefine.org/incumbent/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, incumbent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/incumbent/thesaurus/synonyms>.
MLASmart Define. "incumbent thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/incumbent/thesaurus/synonyms>