intuitive |inˈt(y)oōitiv| adjective using or based on what one feels to be true even without conscious reasoning; instinctive : I had an intuitive conviction that there was something unsound in him. • (chiefly of computer software) easy to use and understand. DERIVATIVES intuitively |1nˈt(j)uəd1vli| adverb intuitiveness |1nˈt(j)uədɪvn1s| noun ORIGIN late 15th cent. (originally used of sight, in the sense [accurate, unerring] ): from medieval Latin intuitivus, from Latin intueri (see intuit ).