not wise in the ways of the world; "either too unsophisticated or too honest to promise more than he could deliver"; "this helplessly unworldly woman"- Kate O'Brien
marked by or showing unaffected simplicity and lack of guile or worldly experience; "a teenager's naive ignorance of life"; "the naive assumption that things can only get better"; "this naive simple creature with wide friendly eyes so eager to believe appearances"
having or put to a practical purpose or use; "practical mathematics"; "practical applications of calculus"
concerned with actual use or practice; "he is a very practical person"; "the idea had no practical application"; "a practical knowledge of Japanese"; "woodworking is a practical art"