Source : Webster's Revised Unabridged Dictionary (1913)

Deter \De*ter"\, v. t. [imp. & p. p. {Deterred}; p. pr. & vb. n.
   {Deterring}.] [L. deterrere; de + terrere to frighten,
   terrify. See {Terror}.]
   To prevent by fear; hence, to hinder or prevent from action
   by fear of consequences, or difficulty, risk, etc. --Addison.

         Potent enemies tempt and deter us from our duty.
                                                  --Tillotson.

         My own face deters me from my glass.     --Prior.

Source : WordNet®

deter
     v 1: try to prevent; show opposition to; "We should discourage
          this practice among our youth" [syn: {discourage}]
     2: turn away from by persuasion; "Negative campaigning will
        only dissuade people" [syn: {dissuade}] [ant: {persuade}]
     [also: {deterring}, {deterred}]

deterred
     See {deter}