Webster's English Dictionary

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deter

de.ter \di-'t*r\ \-'t*r-m*nt\ vt or de.terred;  or de.ter.ring [L 
   deterre-re, fr. de- + terre-re to frighten] 1: to turn aside, discourage, 
   or prevent from acting (as by fear)  2: INHIBIT  - de.ter.ment n