Gyp

I heard, years ago, that the word "gyp" (pronounced "jip") was culturally insensitive. I stopped using it immediately.

According to the OED, gyp means (among other things):
(noun) U.S. slang for a thief.
(noun) A fraudulent action, or a swindle.
(verb) To cheat, trick, or swindle.

You probably already knew that. What you may not have known, however, is where it came from: the word gypsy. Which is no big deal, right? Well, actually, that group of people prefer to go by Rom (of which the plural is Roma or Romani).

Yes, like Esmeralda from The Hunchback of Notre Dame

The Romani historically have a reputation of being nomadic and staying in a town just long enough to trick everyone out of some money before moving on to the next town. This is, obviously, an unflattering stereotype, but  we still use gyp to describe this sort of behavior, so it unfortunately doesn't look like it's going away anytime soon.