嫌 (iya) is the Japanese word for "disgusting/unpleasant/gross". So you could say それは嫌 (sore ha iya) which is literally "That is disgusting". Though depending on how disgusting the person finds it, you might just get an exclaimed いやあ！ (iyaa).
Note: The second expression would be pulled out of context because いや (iya) (without kanji) means "no".
気持ちが悪い ＝ きもい
Kimochi ga warui or the short form version is kimoi
Alex Gross has written: 'Japanese Beauties (Icons)'
you say gross.
how to say "editor" in japanese
To say old Japanese illustrations in Japanese, you say "Mukashi no Nihon no irasuto".
we say Nakagawa if we want to say inside in Japanese.
フライドポテト is how you say it in japanese'
メロン is how you say melon in Japanese.
To say tennis in Japanese.........テニス
Terekineshisu is the word for telekinesis in the Japanese language.
Eww is only a sound effect and isn't translated to something in Japanese. The closest translation would be "Mazui" which would mean gross or disgusting. e.g "Kono wa gyuunyuu o mazui desu" - This milk is bad/disgusting.