Onomatopoeic word: Boo

What sound does a ghost make when it's trying to talk? Well, when we're discussing onomatopoeia, the sound and the word is boo.

Onomatopoeia is the formation of a word from a sound associated with it (like crunchy or sizzle, for example).

You'll be hearing the exclamation boo often if you are out on Halloween night and, since it is used to startle or frighten someone, what is the appropriate response? If you don't know, see my previous blog post on
what to say when something scares you. You'll be glad you did.