1. (n.) The act of putting down or keeping down; repression; as, the suppression of a riot\, insurrection, or tumult; the suppression of truth, of reports, of evidence, and the like.

2. (n.) Complete stoppage of a natural secretion or excretion; as, suppression of urine; -- used in contradiction to retention, which signifies that the secretion or excretion is retained without expulsion.

3. (n.) Omission; as, the suppression of a word.

Eighteenth Amendment Prohibition Party Volstead Act abolishment abolition aloofness annihilation annulment arrest arrestation arrestment backwardness bamboo curtain ban barrier of secrecy bashfulness blackout blankness block blockage blocking bottling up breaking ceasing censoring censorship cessation check checking chilliness choking choking off clogging closing up closure coldness concealing concealment conquering constraint constriction contraband control controlling conversion coolness corking up crackdown cramp crushing curtain defense mechanism delay denial deracination detachment detainment detention disallowance discontinuation discreetness discretion distance domestication elimination embargo end ending eradication exclusion expressionlessness extermination extinction extinguishment extirpation fixation foot-dragging forbiddance forbidden fruit forbidding frigidity frostiness gentling guardedness halt halting hampering hiding hindering hindrance holdback holding holding in holdup humbling humiliation hush-up iciness impassiveness impassivity impediment impersonality inaccessibility index index expurgatorius index librorum prohibitorum inhibition injunction interdict interdicting interdiction interdictum interference interruption introversion iron curtain ironbound security keeping law let liquidation locking in maintenance mental block modesty negation negativism no-no nuisance value nullification oath of secrecy obstructing obstruction obstructionism occlusion official secrecy opposition pall precluding preclusion prehension preservation prevention prohibiting prohibition prohibitory injunction proscription psychological block purge put-down putting down quashing quelling quenching quieting reduction refusal rejection remoteness repression reserve reservedness resistance restraining restraint restriction restrictive covenants retainment retardation retardment retention retentiveness retentivity reticence reticency retirement rooting out ruling out seal of secrecy security setback silencing smashing smothering snuffing out squashing squeeze squelching standoffishness statute stifling stop stopping stranglehold strangling strangulation stricture subdual subduedness subduing sublimation suffocating suffocation sumptuary laws surcease symbolization taboo taming tenacity terminating termination throttling treading down unaffability unapproachability uncongeniality undemonstrativeness unexpansiveness uprooting veil veil of secrecy voiding withdrawal withdrawnness withholding wraps zoning zoning laws