Paraskevidekatriaphobia…
 
How's THAT for a useless word, huh?
 
It's the word for fear of Friday the 13th and it's pronounced: (pair.uh.skee.vee.dek.uh.tree.uh.FOH.bee.uh). Just in case you were wondering.
 
Today's useless word brought to you by The Word Spy.