Words That Are Their Own Opposites

English is weird: There are words that can mean two opposite things. Here’s what we mean:

A contranym is a word that means two things that are opposites of each other. For example, bound can mean to leap or jump, but it can also mean to be secured, as in with rope. English is full of these confounding words, which make it a very tricky second (or even first!) language to learn.