Alien

allochtoon

(not belonging to the same country)

buitenaards

(pertaining to extraterrestrial life)

buitenlands

(not belonging to the same country)

vreemd

(very unfamiliar, strange)

alien

(life form of non-Earth origin)

allochtoon

(foreigner)

buitenlander

(foreigner)

ruimtewezen

(life form of non-Earth origin)

vluchteling

(foreigner)

vluchtelinge

(foreigner)

vreemdeling

(person, etc. from outside)

vreemdelinge

(person, etc. from outside)