ra·tio·nal·ism 
/ˈræʃənəˌlɪzəm/ noun
/ˈræʃənəˌlɪzəm/ noun [noncount] philosophy : the belief that reason and experience and not emotions or religious beliefs should be the basis for your actions, opinions, etc.
— ra·tio·nal·ist /ˈræʃənəlɪst/ noun, plural ra·tio·nal·ists [count]
/ˈræʃənəlɪst/ noun, plural ra·tio·nal·ists [count]— rationalist or ra·tio·nal·is·tic /ˌræʃənəˈlɪstɪk/ adjective always used before a noun
▪ a rationalist philosophy/thinker
/ˌræʃənəˈlɪstɪk/ adjective always used before a noun ▪ a rationalist philosophy/thinker
