When you conceal something, you are keeping it from being discovered: “To avoid another argument with his cousins, Jonathan worked hard to conceal his disappointment at the outcome of the race.”

The verb conceal can be used to describe the hiding of feelings (as in “to conceal anger”) or facts (as in “to conceal identity”). Conceal also can be used to describe the act of hiding or covering an item to prevent discovery. If you eat the last piece of chocolate cake, for example, you may want to conceal the evidence by removing the icing-stained plate from your room.

Definitions of conceal
  1. verb
    prevent from being seen or discovered
    synonyms: hide
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    make visible or noticeable
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    to obscure, or conceal with or as if with a veil
    place out of sight; keep secret
    block, obstruct
    shut out from view or get in the way so as to hide from sight
    spread over a surface to conceal or protect
    hide in one's bosom
    cover from sight
    cover, cover up
    hide from view or knowledge
    harbor, harbour, shield
    hold back a thought or feeling about
    becloud, befog, cloud, fog, haze over, mist, obnubilate, obscure
    make less visible or unclear
    disguise, mask
    make unrecognizable
    sweep under the rug
    to conceal something in the hopes it won't be discovered by others
    lurk, skulk
    lie in wait, lie in ambush, behave in a sneaky and secretive manner
    cloak, dissemble, mask
    hide under a false appearance
    hide (feelings) from other people
    take part in a masquerade
    gloss over, hush up, sleek over, whitewash
    cover up a misdemeanor, fault, or error
    cast a shadow upon
    disguise by camouflaging; exploit the natural surroundings to disguise something
    cause to have a limited or narrow view of a situation
  2. verb
    hold back; keep from being perceived by others
    “She conceals her anger well”
    synonyms: hold back, hold in
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    hide from view
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