147 entries under noun topic. ×

16
must(verb, work, charge, understanding)
12
naught(adjective, nothingness, zero, nonentity)
12
need(verb, work, charge, understanding)
11
nought(adjective, nothingness, zero, nonentity)
6
duty(understanding, right, concern, use)
5
obligation(work, charge, right, concern)
5
onus(work, charge, understanding, right)
5
zero(adjective, nothingness, nonentity, nothing)
4
charge(work, understanding, right, use)
3
nothing
3
aught
3
burden(work, charge, understanding, right)
3
business(work, charge, understanding, right)
3
commitment(work, charge, understanding, right)
2
allegiance(burden, responsibility, liability, obligation)
2
deference(burden, responsibility, liability, obligation)
2
demand(right, use, want, essential)
2
loyalty(burden, responsibility, liability, obligation)
2
mission(business, work, charge, burden)
2
needs
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APASmart Define. (2015). ought thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/ought/thesaurus/synonyms
ChicagoSmart Define. 2015. "ought thesaurus" https://smartdefine.org/ought/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, ought thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/ought/thesaurus/synonyms>.
MLASmart Define. "ought thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/ought/thesaurus/synonyms>