If behaviour or beliefs, etc. are repugnant, they are very unpleasant, causing a feeling of disgust.令人厌恶的;令人反感的
a repugnant smell令人作呕的气味
I find your attitude towards these women quite repugnant.我觉得你对待这些女性的态度非常令人反感。
The idea of cheating in an exam is morally repugnant to me.我认为在考试中作弊的想法不道德,对此深恶痛绝。