Source : Webster's Revised Unabridged Dictionary (1913)

Suppress \Sup*press"\, v. t. [imp. & p. p. {Suppressed}; p. pr.
   & vb. n. {Suppressing}.] [L. suppressus, p. p. of supprimere
   to suppress; sub under + premere, pressum, to press. See
   {Sub-}, and {Press}.]
   1. To overpower and crush; to subdue; to put down; to quell.

            Every rebellion, when it is suppressed, doth make
            the subject weaker, and the prince stronger. --Sir
                                                  J. Davies.

   2. To keep in; to restrain from utterance or vent; as, to
      suppress the voice; to suppress a smile. --Sir W. Scott.

   3. To retain without disclosure; to conceal; not to reveal;
      to prevent publication of; as, to suppress evidence; to
      suppress a pamphlet; to suppress the truth.

            She suppresses the name, and this keeps him in a
            pleasing suspense.                    --Broome.

   4. To stop; to restrain; to arrest the discharges of; as, to
      suppress a diarrhea, or a hemorrhage.

   Syn: To repress; restrain; put down; overthrow; overpower;
        overwhelm; conceal; stifle; stop; smother.

Source : WordNet®

suppressed
     adj 1: kept from public knowledge by various means; [ant: {publicized}]
     2: manifesting or subjected to suppression; "a suppressed
        press"
     3: held in check with difficulty; "a smothered cough"; "a
        stifled yawn"; "a strangled scream"; "suppressed laughter"
        [syn: {smothered}, {stifled}, {strangled}]