alien
(politically incorrect after Arizona Bill S-1070): 1) synonym for extraterrestrial. 2) (from the Latin alienus, meaning stranger): simply, with no political connotations attached, a 'stranger'. 3) an offensive term for an illegal immigrant to the United States, regardless of ethnic background or country of origin.
the Latin term 'alienus', meaning 'stranger' in English, didn't only give us the noun 'alien', but also the verb 'to alienate', and the adjective 'alienated' (usually followed by from).
By Uncle Dimma