kəʊˈhɪəɹənt koːˈhiɹənt koʊˈhɛɹənt ˈlɒdʒɪkəɫ ˈlɑdʒɪkəɫ ˈl(j)uːsɪd capable of thinking and expressing yourself in a clear and consistent manner a lucid thinker she was more coherent than she had been just after the accident