拆穿 literally means 'to tear open and pierce through' — combining 拆 (chāi, 'to dismantle, take apart') and 穿 (chuān, 'to pierce, penetrate'). Figuratively, it describes the act of revealing a lie, deception, or pretense by uncovering hidden truth — as if tearing away a false surface to expose what lies beneath. It implies active detection and public or decisive exposure, often with a sense of sharp insight or confrontation.

This verb is commonly used in spoken and written Chinese when someone uncovers dishonesty — whether in personal relationships, media reports, or everyday situations like cheating or exaggeration. It carries a slightly strong, sometimes critical tone, suggesting the deceiver has been caught red-handed. Unlike neutral terms for 'discovering', 拆穿 emphasizes intentionality and clarity in revelation — the truth isn’t just found; it’s laid bare.