Synonyms|72Antonyms|16|Broader|0Narrower|0Related|25

61 entries under adjective topic. ×

2
necessary(essential, required, obligatory, needed)
1
all-important(significant, essential, basic, vital)
1
binding(significant, essential, basic, vital)
1
bottom-line(significant, essential, basic, vital)
1
chief(significant, essential, basic, vital)
1
compelling(significant, essential, basic, vital)
1
compulsory(significant, essential, basic, vital)
1
de rigueur(expression, significant, essential, basic)
1
decisive(significant, essential, basic, vital)
1
dutiful(obedient, well-behaved)
1
exigent(significant, essential, basic, vital)
1
expedient(significant, essential, basic, vital)
1
fundamental(significant, essential, basic, vital)
1
imperative(significant, essential, basic, vital)
1
mandatory(significant, essential, basic, vital)
1
momentous(significant, essential, basic, vital)
1
name of game(expression, idiom, significant, essential)
1
needed(significant, essential, basic, vital)
1
needful(significant, essential, basic, vital)
1
obligatory(significant, essential, basic, vital)
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ChicagoSmart Define. 2015. "incumbent on thesaurus" https://smartdefine.org/incumbent_on/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, incumbent on thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/incumbent_on/thesaurus/synonyms>.
MLASmart Define. "incumbent on thesaurus" 8 May 2015. Web. 28 September 2026. <https://smartdefine.org/incumbent_on/thesaurus/synonyms>