The Collaborative International Dictionary of English v.0.48:

Repress \Re*press"\ (r?-pr?s"), v. t. [Pref. re- + press.]
   To press again.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Repress \Re*press"\ (r?-pr?s"), v. t. [Pref. re- + press: cf. L.
   reprimere, repressum. Cf. Reprimand.]
   1. To press back or down effectually; to crush down or out;
      to quell; to subdue; to supress; as, to repress sedition
      or rebellion; to repress the first risings of discontent.
      [1913 Webster]

   2. Hence, to check; to restrain; to keep back.
      [1913 Webster]

            Desire of wine and all delicious drinks, . . .
            Thou couldst repress.                 --Milton.
      [1913 Webster]

   Syn: To crush; overpower; subdue; suppress; restrain; quell;
        curb; check.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Repress \Re*press"\, n.
   The act of repressing. [Obs.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

repress
    v 1: put down by force or intimidation; "The government quashes
         any attempt of an uprising"; "China keeps down her
         dissidents very efficiently"; "The rich landowners
         subjugated the peasants working the land" [syn: repress,
         quash, keep down, subdue, subjugate, reduce]
    2: conceal or hide; "smother a yawn"; "muffle one's anger";
       "strangle a yawn" [syn: smother, stifle, strangle,
       muffle, repress]
    3: put out of one's consciousness [syn: suppress, repress]
    4: block the action of

Moby Thesaurus II by Grady Ward, 1.0:

172 Moby Thesaurus words for "repress":
   arrest, asphyxiate, ban, bar, bate, beat down, black out, blunt,
   bottle up, break, browbeat, bulldoze, bully, castrate, censor,
   check, choke off, clamp down on, coerce, collect, compel,
   constrain, contain, control, cool, cork, cork up, countercheck,
   cow, crack down on, crush, curb, dam up, damp, damp down, dampen,
   daunt, debar, delay, deny, despotize, detain, deter, disallow,
   discourage, disedge, domineer, domineer over, draw the teeth,
   drown, dull, embargo, enjoin, enslave, exclude, exclude from,
   extinguish, forbid, frustrate, gag, grind, grind down, hamper,
   henpeck, hinder, hold back, hold down, hold in, hold in check,
   hold up, hugger-mugger, hush, hush up, hush-hush, impede, inhibit,
   intercept, interdict, interfere, intermeddle, interrupt, intervene,
   intimidate, jump on, keep, keep back, keep down, keep in,
   keep in check, keep under, keep under control, kill, limit,
   lock in, lord it over, maintain, meddle, muffle, muzzle, obtund,
   oppose, oppress, outlaw, overawe, overbear, overcome, overmaster,
   override, pour water on, preclude, preserve, press heavy on,
   prevent, prohibit, proscribe, put down, quash, quell, quench,
   refuse, rein, reject, resist, restrain, retain, retard, retund,
   ride over, ride roughshod over, rule out, save, save up, say no to,
   scotch, set back, shush, shut down on, shut out, silence,
   simmer down, sit down on, sit on, slacken, smash, smother, snub,
   squash, squelch, stanch, stifle, strangle, stultify, subdue,
   subjugate, sublimate, suffocate, suppress, taboo, terrorize,
   throttle, trample down, trample upon, tread down, tread upon, turn,
   tyrannize, tyrannize over, unman, walk all over, walk over, weaken,
   weigh heavy on