clos·et 
(klŏzĭt, klôzĭt)
(klŏzĭt, klôzĭt)n.
1. A cabinet or enclosed recess for linens, household supplies, or clothing.
2. A small private chamber, as for study or prayer.
3. A water closet; a toilet.
4. A state of secrecy or cautious privacy: Two days before the election, the candidate suddenly came out of the closet and denounced the proposed law.
tr.v. clos·et·ed, clos·et·ing, clos·ets
To enclose or shut up in a private room, as for discussion: closeted themselves with their attorneys.
adj.
1. Private; confidential: closet information.
2. Being so or engaging only in private; secret: a closet proponent of a tax increase; a closet alcoholic.
3. Based on theory and speculation rather than practice.
[Middle English, private room, from Old French, diminutive of clos, enclosure, from Latin clausum, from neuter of clausus, enclosed; see CLOSE.]
closet·ful′ n.