reverse English

noun

1. Also called reverse side. Billiards.,  a spinning motion imparted to a cue ball in such a manner as to prevent it from moving in a certain direction.

2. words that, because of their misuse or careless syntax, convey an opposite meaning from the one intended or leave their exact meaning in doubt.

   “Don't miss it if you can” is reverse English.

Word History and Origins

Origin of reverse English¹

An Americanism dating back to 1905–10