Alien
Alien adjective - Being, relating to, or characteristic of a country other than one's own.
Interplanetary and alien are semantically related. In some cases you can use "Interplanetary" instead an adjective "Alien".
Interplanetary
Interplanetary adjective - Between or among planets.
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Synonyms for Interplanetary
Alien and interplanetary are semantically related. You can use "Alien" instead an adjective "Interplanetary".
Mutual synonyms
Both words in one sentence
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Lavos from Chrono Trigger is a sufficiently evolved alien; his species has developed a life-cycle that works on an interplanetary scale.
Source: Sufficiently Advanced Alien - Boldly Coming: The main character of ''ShatterGate, Rix, is an "interplanetary Casanova," and a central mechanic involves sleeping with various alien girlfriends for stat boosts.
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In Speaker for the Dead the "piggies" have such an alien biology, it starts an interplanetary incident before the xenozoologist protagonists figure out what's going on.
Source: Starfish Aliens
Cite this Source
Interplanetary and Alien. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/alien/interplanetary
Alien & Interplanetary. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/alien/interplanetary>.
Interplanetary or Alien. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/alien/interplanetary.
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