unmask

Short definition from Wiktionary

Verb

1. 1
   To remove a mask from someone.
2. 2
   To expose, or reveal the true character of someone.
3. 3
   To remove one's mask.
4. 4
   To cease engaging in masking, to cease disguising one's autism.
5. 5
   To expose something that was concealed or shielded from an enemy.
6. 6
   To enable (an interrupt, etc.) by unsetting or setting the associated bit.