11
necessity(noun, force, cause, right, reason)
10
constraint(noun, force, charge, concern, burden)
10
engagement(noun, work, charge, concern, agreement)
10
indebtedness(noun, damage, weakness, burden, condition)
10
need(noun, work, force, charge, concern)
10
task(noun, activity, business, performance, action)
9
accountability(noun, charge, concern, weakness, burden)
9
work(noun, business, action, place, charge)
8
demand(noun, order, force, charge, right)
8
dues(noun, work, charge, damage, fine)
8
guarantee(noun, agreement, arrangement, record, contract)
8
job(noun, business, performance, action, place)
8
undertaking(noun, business, performance, action, work)
7
assignment(noun, business, performance, action, work)
7
business(noun, action, place, work, charge)
7
imperative(noun, adjective, order, charge, rule)
7
office(noun, business, action, place, work)
7
part(noun, work, charge, burden, responsibility)
7
requisite(noun, right, want, need, essential)
7
understanding(noun, agreement, arrangement, responsibility, bond)
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APASmart Define. (2015). obligation thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/obligation/thesaurus/synonyms
ChicagoSmart Define. 2015. "obligation thesaurus" https://smartdefine.org/obligation/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, obligation thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/obligation/thesaurus/synonyms>.
MLASmart Define. "obligation thesaurus" 22 December 2015. Web. 23 September 2026. <https://smartdefine.org/obligation/thesaurus/synonyms>