LinkExchange MemberComic words starting with U are often cries of pain or of sudden physical impact.
UFFT [Thunderstrike vol.1 #4, 1994] A cry of pain
UGKH [The Punisher: War Zone vol.1 #1, 1993] A cry of pain
UHHNNNNN... [Detective Comics vol.47 #529, 1983] also UNNGHH also UNNHH also UNNNGHHH... also UUHH [Captain Marvel vol.1 #42, 1976] also UUUUUUUUUUUUUNNN... [Star Hunters vol.2 #4, 1978] A groaning sound
UHMMMMM [The Adventures of Bayou Billy #2, 1989] A kissing sound
UHNNFF [Dare Devil: The Man Without Fear vol.1 #3, 1993] also UNNGHH [Fantastic Four #315, 1988] A grunting sound
ULP [Cold Blooded Chamelion Commando #1, 1986] A gulping or swallowing sound
UM,HMMM [The Adventures of Captain Jack #7, 1987] A sound made to indicate agreement or "Yes"
UNGGG [Mantra vol.1 #7, 1994] A grunting sound, as when hit
UNGH [2099 Unlimited vol.1 #4, 1993] also UNNGH [Mantra vol.1 #2, 1993] An exclamation caused by receiving a sudden impact to the body
UNH [The Adventures of Captain Jack #7, 1987] A grunting sound indicating "Yes", "What" etc
UNNGH see UNGH
UNNGHH see UHNNFF
UNNGHH see UHHNNNNN...
UNNHH also UNNNGHH [Avengers West Coast Annual vol.2 #8, 1993] also UNNNH [The Punisher: War Zone vol.1 #1, 1993] A cry of pain
UNNHH see UHHNNNNN...
UNNNGHH see UNNHH
UNNNGHHH... see UHHNNNNN...
UNNNH see UNNHH
UNPH [Batman #502, 1993] A sound made by a person being hit
URF [Superboy #154, 1969] The sound of a dog's bark
URK [Cold Blooded Chamelion Commando #1, 1986] A sound made by a person when hit hard
URPH [The Adventures of Bayou Billy #2, 1989] The sound a person makes when they are hit in the stomach
URRGG [Avengers West Coast Annual vol.2 #8, 1993] A gurgling sound
URRUGH [Thunderstrike vol.1 #4, 1994] A cry of pain
UUHH see UHHNNNNN...
UUNNNH... [Darkhold #10, 1993] A moaning sound
UUURRRGGGHH [Clint #1, 1986] A cry
UUUUURP [Prototype vol.1 #1, 1994] A cry of pain
UUUUUUUUUUUUUNNN... see UHHNNNNN...