6
unless(conjunction, save, except, if, whereas)
3
but(preposition, conjunction, bar, save, lacking)
3
else(adverb, conjunction, then, differently)
3
except(preposition, conjunction, bar, save, failing)
3
excepting(preposition, bar, save, lacking, except)
3
otherwise(adverb, alternatively)
2
aside from(expression, preposition, bar, save, lacking)
2
on the other hand(adverb, conjunction, contrast, alternative, viewpoint)
2
save(preposition, conjunction, bar, lacking, except)
1
any other way(adverb, else, differently, contrarily)
1
bar(preposition, save, lacking, except, without)
1
barring(preposition, bar, save, lacking, except)
1
besides(preposition, bar, save, lacking, saving)
1
contrarily(adverb, else, differently)
1
differently(adverb, else, contrarily)
1
diversely(adverb, else, differently, contrarily)
1
elseways(adverb, else, differently, contrarily)
1
except for(expression, conjunction, bar, save, except)
1
excepting that(expression, conjunction, save, if, unless)
1
excluding(preposition, bar, save, lacking, except)
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APASmart Define. (2015). if not thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/if_not/thesaurus/synonyms
ChicagoSmart Define. 2015. "if not thesaurus" https://smartdefine.org/if_not/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, if not thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/if_not/thesaurus/synonyms>.
MLASmart Define. "if not thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/if_not/thesaurus/synonyms>