Lip

BRINK

Think of the edge where something is about to happen, like the very start of a fall or a moment of decision.

Lip" here isn’t about the mouth—it’s a sneaky way to hint at the edge of something, like the lip of a glass or cliff. The word "brink" means the very edge or verge, so it fits perfectly as a synonym with a bit of wordplay. Think of standing on the brink of a decision or the lip of a volcano—same idea, different words.