aliens Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a person who comes from a foreign countryadjective. strange or not belonging to one Example Sentence Some people think aliens exist in outer space. Synonyms foreigner; noncitizen; stranger; strange Antonyms native; citizen; normal Hear It! Say It! Write It! aliens Switch to cursive Start Share with your friends: