verb (used with object), dis·closed, dis·clos·ing.
- to make known; reveal or uncover: to disclose a secret.
- to cause to appear; allow to be seen; lay open to view: In spring the violets disclose their fragrant petals.
- Obsolete. to open up; unfold.
- Obsolete. disclosure.
- not made known or revealedan undisclosed sum
- to make (information) known
- to allow to be seen; lay bare
adj.1560s, from un- (1) “not” + past participle of disclose. v.late 14c., from Old French desclos “open, exposed, plain, explicit,” past participle of desclore (Modern French déclore) “open, break open, unlock, reveal,” from des- (see dis-) + clore “to close” (see close (v.)). Related: Disclosed; disclosing.