artless
/ˈärt-ləs/
adjective
lacking art, knowledge, or skill : uncultured
made without skill : crude
free from artificiality : natural
an artless brute
natural ingenuous naive unsophisticated artless mean free from pretension or calculation. natural implies lacking artificiality and self-consciousness and having a spontaneousness suggesting the natural rather than the man-made world. ingenuous implies inability to disguise or conceal one's feelings or intentions.