4
ultimatum(noun, order, charge, rule, demand)
4
vow(noun, agreement, contract, assurance, compact)
3
IOU(noun, damage, responsibility, balance, capital)
3
arrangement(noun, agreement, condition, deal, promise)
3
call of duty(noun, expression, idiom, burden, responsibility)
3
chit(noun, damage, responsibility, balance, capital)
3
clause(noun, condition, requirement, proviso)
3
command(noun, order, charge, burden, demand)
3
commission(noun, performance, action, order, place)
3
committal(noun, work, charge, right, concern)
3
compact(noun, agreement, arrangement, procedure, contract)
3
compulsory
3
concern(noun, business, action, work, charge)
3
courtesy(procedure, etiquette, rules)
3
deal(noun, agreement, arrangement)
3
dedication(noun, loyalty, commitment)
3
devotion(noun, loyalty, commitment)
3
effort(noun, performance, action, work, power)
3
enforcement(noun, power, strength, energy, vigor)
3
enterprise(noun, action, work, care, thing)
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APASmart Define. (2015). obligation thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/obligation/thesaurus/synonyms
ChicagoSmart Define. 2015. "obligation thesaurus" https://smartdefine.org/obligation/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, obligation thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/obligation/thesaurus/synonyms>.
MLASmart Define. "obligation thesaurus" 22 December 2015. Web. 25 September 2026. <https://smartdefine.org/obligation/thesaurus/synonyms>