solitary - Kirai does not mean anything to do with beautiful 嫌い - kirai - means to hate / dislike.
beautiful is 奇麗 - kirei
OP - your question is a bit unclear, how rude etc are you wanting to be. is this a response to some guy saying he likes you (more than friends) and you want to say i don't like you. do you want to say you don't like the person as strongly as to say you hate the person?