Marked by little or no ornamentation or decoration:
The definition of rude is behavior that does not conform to what society says would be polite or good manners or inappropriate subjects of discussion.
Threatening or ominous:
Prim and sedate.
Not likely to please; objectionable:
Not pleasant or attractive; disagreeable:
The definition of attractive is rousing interest and pleasure, especially in terms of physical looks.
Find another word for unattractive. In this page you can discover 24 synonyms, antonyms, idiomatic expressions, and related words for unattractive, like: untempting, plain, rude, unfashionable, irksome, ugly, frumpish, homely, unappetizing, undesirable and uninviting.