1) Avoid mentioning 2) Bury 3) Camouflage 4) Cloak 5) Cover 6) Cover up 7) French word used in English 8) Hide 9) Hide from view 10) Hide, obscure 11) Hold back 12) Keep it hush-hush 13) Keep out of sight 14) Keep under wraps 15) Mask 16) Prevent from being seen 17) Put out of sight 18) Screen 19) Secrete 1) Becloud 2) Befog 3) Bury 4) Cloak 5) Confuse 6) Cover 7) Disguise 8) Enshroud 9) Hide 10) Hush up 11) Lurk 12) Mask 13) Obnubilate 14) Screen 15) Secrete 16) Shroud 17) Skulk 18) Veil 
• (v. t.) To hide or withdraw from observation; to cover; to cover or keep from sight; to prevent the discovery of; to withhold knowledge of.
[Verb] To hide something.
Con·ceal' transitive verb [ imperfect & past participle Concealed ; present participle & verbal noun Concealing .] [ Old French conceler , Latin concelare ; con- + celare to hide; akin to Anglo-Saxon hel...
hide keep secret 
[v] - hold back
conceal, conceals 1. To put or to keep something or someone out of sight, or to prevent the person or thing from being found. 'The evidence was carefully concealed by the prosecutor.' 2. To keep something secret, or to prevent it from being known. 3. To hide; to withdraw, or to remove from observation; to cover or to keep from sight. 4. To preve...
hold back verb hold back; keep from being perceived by others; `She conceals her anger well`
disimular, camuflar
to hide; withdraw or remove from observation; cover or keep from sight: He concealed the gun under his coat. · to keep secret; to prevent or avoid disclosing or divulging: to conceal one's identity by using a false name.