The Collaborative International Dictionary of English v.0.48:

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.
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         Potent enemies tempt and deter us from our duty.
                                                  --Tillotson.
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         My own face deters me from my glass.     --Prior.
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