de·tes·ta·tion \ˌdēˌteˈstāshən sometimes də̇ˌ- or _dēˌ-\noun (-s) Etymology: Middle English detestacion, from Middle French & Latin; Middle French detestation, from Latin detestation-, detestatio, from detestatus (past participle of detestari) + -ion-, -io -ion 1.obsolete: public or formal denunciation 2.: the act or feeling of detesting : extreme hatred or dislike : abhorrence, loathing < detestation of civil war > 3.: an object of hatred or contempt < the detestation of all honest men >