Synonyms|162Antonyms|1|Broader|8Narrower|1Related|41
1
hydrogen(noun, alkali)
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APASmart Define. (2015). helium thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/helium/thesaurus/antonyms
ChicagoSmart Define. 2015. "helium thesaurus" https://smartdefine.org/helium/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, helium thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/helium/thesaurus/antonyms>.
MLASmart Define. "helium thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/helium/thesaurus/antonyms>