Break:

Break is a debuff that disables many passive abilities and effects, preventing them from functioning while the target is affected.

In Dota 2, Break is important because it can shut off passive damage, survivability, or utility from hero abilities and item effects, making it a strong counter to heroes that rely on passives. It does not usually affect every passive in the game, so players often check ability text to see what can be broken.

Related: Debuffs, Silence