This word covers a multitude of expressions where one might be tempted to use a host of swear words to express. Better to put forth a positive response in trying situations than to descend into vulgar vagaries which serve no useful purpose.
Your dictionary doesn't have my least favorite word. It is can't. My 3rd grade teacher told us that can't and won't are the most destructive words in English and ain't is the most hideous. I live in the can do and the let's try.