Synonyms and Antonyms for Alien

Following is a list of 150 synonym words and phrases that are related to alien:

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3 Letter Words

yenodd

4 Letter Words

gray

5 Letter Words

worldcandyweirdalianearthrover

6 Letter Words

exoticinwardcanadaabroadalinescyborgnordicbolideproxer

7 Letter Words

foreignstrangeunknownmartiancountryoutsideoutwardcuriousbizarreunusualhostileinvaderfungoidsaurianroboticearthiestarmanvisitoreuropanuranian

8 Letter Words

estrangealienatestrangertropicaloverseasoffshoreinvasivecreaturediasporaexternalpeculiaroutsiderhumanoidspacemanearthmanlifeformspacemengalacticmartiansalienismearthitesolarianoutworldmoon-manexoearthvenusian

9 Letter Words

extrinsicforeigneroutlanderdisaffectexogenousimmigrantalienatedobliviousnonnativeunrelatedpaperlesscountriesoff-shorestrangersinsectoidearthlinginsectilespaceshipreptilianlifeformshumanoidstentacledalienkindexoplanetspacelingastronautpleiadeancontacteenonplanet

10 Letter Words

noncitizenexpatriatedeportableextraneousnon-nativeunfamiliarforeignersoffworlderearthlingsinsectlikelizardlikeinterloperatlanteansspiderlikespaceshipsexoscienceexo-planet

11 Letter Words

second-handinfestationunconnectedspacefaringxenomorphicspacefarersinterlopingoffworldersspace aliensuper-earthouter spaceplanetarianplanetality

12 Letter Words

foreign-borninterstellarnoncorporealotherworldlystar visitorouter planet

13 Letter Words

internationalintergalacticspace invaderflying saucerfirst contact

14 Letter Words

interplanetary

15 Letter Words

internationallyexosolar planetastrophilosophy

16 Letter Words

extraterrestrialinterdimensionalhyperdimensionalintraterrestriallittle green manalien space batsalpha centaurian

17 Letter Words

extraterrestrialsancient astronautextrasolar system

19 Letter Words

interstellar planet

22 Letter Words

extraterrestrial being

Using this list of similar-meaning words, you can choose the best synonyms to replace alien in your sentences.

Additionally, you'll find antonyms included, perfect for when you need the complete opposite meaning of alien in your writing.