13 entries under noun topic. ×
| unidentified flying object | |
| flying saucer(expression, object, ship, jet) | |
| extraterrestrial spacecraft(expression, object, rocket, spaceship) | |
| airship(balloon, jet, airplane) | |
| alien craft(expression, spaceship) | |
| aircraft(plane, airplane, airship, dirigible) | |
| rocket | |
| balloon(jet, airplane) | |
| chopper(balloon, jet, airplane) | |
| flying machine(expression, balloon, jet, airplane) | |
| rocketship | |
| spacecraft | |
| spaceship |
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| APA | Smart Define. (2015). ufo thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/ufo/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "ufo thesaurus" https://smartdefine.org/ufo/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, ufo thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/ufo/thesaurus/synonyms>. |
| MLA | Smart Define. "ufo thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/ufo/thesaurus/synonyms> |