Synonyms|221Antonyms|15|Broader|4Narrower|0Related|224

8 entries under alien topic. ×

4
Martian(noun, adjective, celestial)
2
space being(noun, expression, idiom, being)
2
space invader(noun, expression, idiom)
1
E.T.
0
creature from outer space(noun, expression, idiom)
0
little green man
0
men from outer space
0
space inhabitant
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APASmart Define. (2016). extraterrestrial thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/extraterrestrial/thesaurus/synonyms
ChicagoSmart Define. 2016. "extraterrestrial thesaurus" https://smartdefine.org/extraterrestrial/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, extraterrestrial thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/extraterrestrial/thesaurus/synonyms>.
MLASmart Define. "extraterrestrial thesaurus" 15 March 2016. Web. 24 September 2026. <https://smartdefine.org/extraterrestrial/thesaurus/synonyms>