You might close your eyes when you say it

• "Oh, gawd!"
• "So gross!"
• Sound of disdain
• Cry of distaste
• "Gag me with a spoon!"
• Repugnant reaction
• "That's icky!"

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
interjection EXAMPLES FROM OTHER ENTRIES ▪ I saw her haircut. Ugh !

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ugh \Ugh\ ([oo^]), interj. An exclamation expressive of disgust, horror, or recoil. Its utterance is usually accompanied by a shudder.

Wikipedia Word definitions in Wikipedia
Ugh or UGH may refer to: Ugh! , a computer game "UGH!" (song) , by The 1975 "Ugh" (SpongeBob SquarePants) , a 2004 TV episode " Ugh! Your Ugly Houses! ," a 1995 single by British alternative music band Chumbawamba "Ugh Ugh Ugh", a song by rapper Juicy J ...