The Collaborative International Dictionary of English v.0.48:
Conceal \Con*ceal"\ (k[o^]n*s[=e]l"), v. t. [imp. & p. p.
Concealed (k[o^]n*s[=e]ld"); p. pr. & vb. n. Concealing.]
[OF. conceler, L. concelare; con- + celareto hide; akin to
AS. helan, G. hehlen, E. hele (to cover), helmet. See Hell,
To hide or withdraw from observation; to cover; to cover or
keep from sight; to prevent the discovery of; to withhold
It is the glory of God to conceal a thing. --Prov. xxv.
Declare ye among the nations, . . . publish and conceal
not. --Jer. l. 2.
He which finds him shall deserve our thanks, . . .
He that conceals him, death. --Shak.
Syn: To hide; secrete; screen; cover; disguise; dissemble;
mask; veil; cloak; screen.
Usage: To Conceal, Hide, Disguise, Dissemble,
Secrete. To hide is the generic term, which embraces
all the rest. To conceal is simply not make known what
we wish to keep secret. In the Bible hide often has
the specific meaning of conceal. See --1 Sam. iii. 17,
18. To disguise or dissemble is to conceal by assuming
some false appearance. To secrete is to hide in some
place of secrecy. A man may conceal facts, disguise
his sentiments, dissemble his feelings, secrete stolen
Bur double griefs afflict concealing hearts.
Both dissemble deeply their affections. --Shak.
We have in these words a primary sense, which
reveals a future state, and a secondary sense,
which hides and secretes it. --Warburton.
Moby Thesaurus II by Grady Ward, 1.0:
60 Moby Thesaurus words for "conceal":
becloud, befog, blanket, blind, bosom, bury, cache, camouflage,
classify, cloak, cloud, cover, cover up, curtain, disguise,
dissemble, distract attention from, ditch, eclipse, ensconce,
enshroud, envelop, file and forget, gloss over, hide, hold out on,
in petto, keep, keep back, keep between us, keep buttoned up,
keep close, keep dark, keep from, keep hidden, keep in ignorance,
keep mum, keep secret, keep snug, keep under cover,
keep under wraps, make no sign, mask, never let on, not give away,
not tell, obfuscate, obscure, occult, play dumb, screen, secrete,
shade, shroud, slur over, stash, varnish, veil, whitewash,