All extraterrestrial synonyms
noun extraterrestrial
- alien — Alien means belonging to a different country, race, or group, usually one you do not like or are frightened of.
- creature — You can refer to any living thing that is not a plant as a creature, especially when it is of an unknown or unfamiliar kind. People also refer to imaginary animals and beings as creatures.
- martian — of, relating to, or like the planet Mars or its hypothetical inhabitants.
- little green man — (euphemistic) A Martian.
adjective extraterrestrial
- celestial — of or in the sky or universe, as planets or stars
- interplanetary — being or occurring between the planets or between a planet and the sun.
- interstellar — Astronomy. situated or occurring between the stars: interstellar dust.
- otherworldly — of, relating to, or devoted to another world, as the world of imagination or the world to come.