Pbth

Pbth is a magic word "so powerful, you cannot spell it, and it can dispel the worst of insults or even the dreaded evil eye. . . . Just put two lips together, stick out your tongue, and blow. It's so easy that kids use it all the time" (Joann Hankamer).

(For other strange and unusual voweless words, don't miss our dictionary of all-consonat words.)