1) Inaesthetic 2) Inartistic 3) Like an eyesore 4) Tasteless 5) Ugly 6) Unartistic 1) Inaesthetic 2) Inartistic 3) Ugly 4) Unartistic 5) Unesthetic 
unaesthetic, unesthetic Void or empty of esthetic perception or taste.
offensive to the aesthetic sense; lacking in beauty or sensory appeal; unpleasant, as an object, design, arrangement, etc.: an unaesthetic combination of colors.