139 entries under expression topic. ×

7
have to(verb, idiom, phrasal verb, bear)
7
sine qua non(noun, idiom, condition, need)
6
ought to(verb, phrasal verb, bear, endure)
4
be obliged(verb, idiom, want, need)
4
have got to(verb, idiom, want, need)
3
be necessary(verb, idiom, need, require)
3
be obliged to(verb, idiom, phrasal verb, want)
3
dry rot(idiom, uncleanness)
2
be made(verb, idiom, want, need)
2
be necessitated(verb, idiom, want, need)
2
be ordered(verb, idiom, want, need)
2
be required(verb, idiom, want, need)
2
call for(verb, phrasal verb)
2
call of duty(noun, idiom, burden, responsibility)
2
had better(idiom, bear, would, should)
2
must needs(verb, idiom, want, need)
2
need to(verb, phrasal verb)
2
needs must(idiom, necessity)
1
be in for
1
cannot do otherwise
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APASmart Define. (2016). must thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/must/thesaurus/synonyms
ChicagoSmart Define. 2016. "must thesaurus" https://smartdefine.org/must/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, must thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/must/thesaurus/synonyms>.
MLASmart Define. "must thesaurus" 29 January 2016. Web. 21 September 2026. <https://smartdefine.org/must/thesaurus/synonyms>