Words That Mean Their Own Opposites

A contronym is a word that holds two contradictory meanings at once. For example, to cleave can mean both to split something apart or to stick firmly together.

These linguistic oddities emerge because words often evolve in two directions simultaneously. Through shifts in usage over centuries, one term can eventually absorb both a positive and negative sense. You might be surprised to find common words like dust, sanction, or screen hiding these dual identities. It is a fascinating reminder that language is always transforming, even when it seems to conflict with itself.