20 entries under obvious topic. ×

27
compulsory(adjective, set, significant, affected, essential)
26
required(adjective, right, significant, essential, basic)
22
obligatory(adjective, right, significant, affected, essential)
20
necessary(adjective, right, essential, obligation)
8
inevitable(adjective, required, obligatory, inescapable)
4
inescapable(adjective, required, inevitable)
1
inexorable(adjective, required, inevitable, inescapable)
1
certain(adjective, inevitable, inescapable)
1
ineluctable(inevitable, inescapable)
1
sure(adjective, inevitable, inescapable)
1
unavoidable(adjective, set, significant, essential, basic)
0
fated(inevitable, inescapable)
0
impending(inevitable, inescapable)
0
ineludible(inevitable, inescapable)
0
inevasible(inevitable, inescapable)
0
locked up(expression, inevitable, inescapable)
0
manifest(inevitable, inescapable)
0
open and shut(expression, idiom, inevitable, inescapable)
0
set(strict, obligatory, compulsory, inevitable)
0
unescapable(inevitable, inescapable)
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APASmart Define. (2015). mandatory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mandatory/thesaurus/synonyms
ChicagoSmart Define. 2015. "mandatory thesaurus" https://smartdefine.org/mandatory/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, mandatory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mandatory/thesaurus/synonyms>.
MLASmart Define. "mandatory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/mandatory/thesaurus/synonyms>