ten-cent word

noun2

1. •
   A short and common word used in place of a longer and more uncommon one.

   • One important note: Exchanging a ten-cent word (“chew”) for a ten-dollar synonym (“masticate”) is NOT the point here. Overly fancy words are just that—overly fancy. — 2013
2. •
   A long word used in place of a short one with the intent to appear sophisticated.