LOL - Don't try and try to use a translator for Japanese words, it comes out as gibberish.
I'm not sure of the meaning you want, but I can give you a few off the top of my head.
Kirei (very beautiful) きれい
Subarashii (splendid) すばらし - 素晴らし
You can say Dai 大 (big, very) infront of the words to increase the size.
Download the japanese font if you want to see them.
Oh, and AFAIK, Yukio (ゆきお)、is a Japanese name, and does not mean much.