Synonyms of hey

1 Syllable
pooh, oop, ugh, hi, ah, um, er, ums, ers, huh, heying, phooey, psst, hiing
2 Syllables
hooray, oh's, hello, hi-ya, bonjour, egad, greetings, ahem, jeepers, shalom, howdy
3 Syllables
howdy-do, welcome
4 Syllables
interjections, interjection