Grade 8
(ex-tra-ter-res-tri-al) 6 syllables

Definition

adjective. relating to beings from beyond Earth.

Example Sentence

We thought we saw an extraterrestrial object shooting through the sky.

More Example Sentences

Some believe in extraterrestrial visitors.

Synonyms

alien; otherworldly; cosmic

Antonyms

humans

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extraterrestrial
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Rhymes

  • terrestrial

  • extraterrestrial