Alien

"Alien" in Japanese

外国の

gaikoku no

(not belonging to the same country)

外来の

gairai no

(not belonging to the same country)

異質な

ishitsu na

(very unfamiliar, strange)

相容れない

aiirenai

(very unfamiliar, strange)

エイリアン

eirian

(life form of non-Earth origin)

余所者

yosomono

(person, etc. from outside)

外人

gaijin

(foreigner)

外国人

gaikokujin

(foreigner)

宇宙人

uchūjin

(life form of non-Earth origin)

異星人

iseijin

(life form of non-Earth origin)

異邦人

ihōjin

(foreigner)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.