The Collaborative International Dictionary of English v.0.48:

Detestation \Det`es*ta"tion\ (?; 277), n. [L. detestatio: cf. F.
   d['e]testation.]
   The act of detesting; extreme hatred or dislike; abhorrence;
   loathing.
   [1913 Webster]

         We are heartily agreed in our detestation of civil war.
                                                  --Burke.
   [1913 Webster]

WordNet (r) 3.0 (2006):

detestation
    n 1: hate coupled with disgust [syn: abhorrence,
         abomination, detestation, execration, loathing,
         odium]