All articles starting with U
6,146 articles
Undead
The undead are mythological and folkloric dead who return in bodily form: revenants, vampires, and zombies. Key facts include the 1819 first recording of "zombie," the Gilgamesh earliest literary reference, Haitian Vodou origins, and medieval revenant beliefs.
Undead Nightmare
Undead Nightmare (Red Dead Redemption: Undead Nightmare) is Rockstar San Diego's 2010 zombie-horror expansion for Red Dead Redemption, starring John Marston; non-canon, four zombie classes, Undead Overrun co-op, Metacritic 87.
Undead Unluck (アンデッドアンラック)
Undead Unluck (アンデッドアンラック) is Yoshifumi Tozuka's Weekly Shonen Jump manga (2020-2025, 27 volumes) about Negators Fuuko and Andy, adapted into a 2023 David Production anime, a 2025 Winter-hen special, and a second season.
Undeath (group)
Undeath is an American death metal band from Rochester, New York, formed in 2018, a leading light of the old-school death metal revival with three albums on Prosthetic Records before signing to Relapse in 2026.
Undecane
Undecane is a straight-chain alkane, C11H24, a colorless, water-insoluble liquid boiling at 196 °C, obtained from petroleum and used as a fuel surrogate and gas chromatography standard.
Undecaprenyl phosphate
Undecaprenyl phosphate (bactoprenol, C55-P) is the essential bacterial isoprenoid carrier lipid that transports sugar intermediates across the cytoplasmic membrane for peptidoglycan, O-antigen, teichoic acid, and capsule synthesis, made by UppS and recycled by BacA/PAP2 phosphatases.
Undecaprenyl-diphosphate synthase
Undecaprenyl-diphosphate synthase (UppS, EC 2.5.1.31), a bacterial cytosolic cis-prenyltransferase that condenses eight IPP units onto farnesyl pyrophosphate to make the C55 carrier lipid Und-PP; essential, conserved, and an antibacterial drug target absent from humans.
Undecidable problem
An undecidable problem, also known as an unsolvable or recursively undecidable problem, is a decision problem for which no algorithm always halts with a correct yes-or-no answer, a limit proven by Turing's halting problem.
Undeclared
Undeclared (2001-2002) is Judd Apatow's Fox college sitcom, a single-camera follow-up to Freaks and Geeks starring Jay Baruchel, Seth Rogen, Carla Gallo, Charlie Hunnam, and Loudon Wainwright III; canceled after one 17-episode season despite strong reviews.
Undefeated
Undefeated (2011, released 2012) is an Oscar-winning documentary by Dan Lindsay and T.J. Martin about coach Bill Courtney and the Manassas Tigers of North Memphis chasing the school's first playoff win.
Undefeated Bahamut Chronicle
Undefeated Bahamut Chronicle (最弱無敗の神装機竜, Saijaku Muhai no Bahamut) is a GA Bunko light novel by Senri Akatsuki: 20 volumes (2013–2020), a Gangan Online manga, and a 12-episode 2016 Lerche anime about Drag-Knight Lux.
Undekhi (अनदेखी)
Undekhi (अनदेखी) is a Hindi SonyLIV crime thriller created by Siddharth Sengupta, released 10 July 2020, about a wedding murder cover-up by the Atwal family; four seasons through 2026, IMDb 7.9.
Under (song/position)
Under (アンダー), also known as Under Girls or Under Members, is the position below senbatsu in AKB48 Group and Nogizaka46, created in 2009, whose members perform a single's B-side.
Under a Blood Red Sky
Under a Blood Red Sky is U2's 1983 live mini-album, its first live release, drawn from three War Tour shows including Red Rocks and Rockpalast; UK No. 2, RIAA multi-platinum, remastered 2008 and 2023.
Under a Killing Moon
Under a Killing Moon is a 1994 full-motion-video adventure game by Access Software, the third Tex Murphy title, combining live-action scenes with real-time first-person 3D exploration.
Under a Rock with Tig Notaro
Under a Rock with Tig Notaro is a Funny Or Die comedy talk show, also called Under A Rock, premiering June 4, 2019 on Prime Video, in which Tig Notaro interviews celebrities she cannot recognize; two seasons, 12 episodes, canceled, clips now viral.
Under Armour
Under Armour is an American sportswear company headquartered in Baltimore, Maryland, founded in 1996 by Kevin Plank, with fiscal 2026 net revenues of $4.97 billion.
Under Ben Bulben
"Under Ben Bulben" is one of the last poems of William Butler Yeats, completed in September 1938 and ending with the epitaph on his headstone at Drumcliff, County Sligo.
Under Capricorn
Under Capricorn (1949) is Alfred Hitchcock's Technicolor costume melodrama set in 1831 Sydney, starring Ingrid Bergman, Joseph Cotten, and Michael Wilding; the second and final Transatlantic Pictures release, known for long takes, a $1 million loss, and later French critical reevaluation.
Under der linden
"Under der linden" is a Middle High German love song by the Minnesänger Walther von der Vogelweide, composed around 1200 and famous for its refrain tandaradei.
Under Doctor
Under Doctor (アンダードクター) is a medical battle manga by Kyo Tanimoto, serialized in Weekly Shonen Jump since January 26, 2026, about underworld doctor Haiji Kino; first volume June 2026, English simulpub on VIZ.
Under Fire (2025 film)
Under Fire (2025) is an American action thriller directed by Steven C. Miller, starring Dylan Sprouse and Mason Gooding as an FBI and DEA agent pinned by a sniper after a cartel deal; released by Vertical on August 15, 2025.
Under Milk Wood
Under Milk Wood is Dylan Thomas's 1953 radio play for voices, set in the fictional Welsh village of Llareggub over one day; first broadcast by the BBC Third Programme on 25 January 1954 with Richard Burton, it won the 1954 Prix Italia.
Under My Skin (Avril Lavigne album)
Under My Skin is Avril Lavigne's second studio album, released May 25, 2004 on Arista. Darker and more rock-oriented than Let Go, it was made with Chantal Kreviazuk and Raine Maida after dropping The Matrix, debuted at No. 1 in six countries, and scored 65 on Metacritic.
Under Night In-Birth
Under Night In-Birth (アンダーナイト インヴァース) is a 2D fighting game series by French-Bread, spiritual successor to Melty Blood, known for its GRD tug-of-war gauge, Vorpal state, and Chain Shift; the seventh entry, Sys:Celes (2024), added rollback netcode.
Under Night In-Birth II
Under Night In-Birth II Sys:Celes (UNI2) is a 2D fighting game by French Bread and Arc System Works, released January 25, 2024 on PS4, PS5, Switch, and PC; series-first rollback netcode, GRD/Vorpal systems, and an 83/100 aggregate score.
Under One Person (一人之下)
Under One Person (一人之下), also known as Hitori no Shita, is a Chinese webcomic by Mi Er, serialized since 2015 and adapted into animated series.
Under Paris
Under Paris (Sous la Seine) is a 2024 French Netflix shark-horror disaster film directed by Xavier Gens, starring Bérénice Bejo, about a mutated mako shark in the Seine before the Paris triathlon.
Under Pressure
Under Pressure, a 1981 duet by Queen and David Bowie recorded at Mountain Studios, Montreux, built on John Deacon's seven-note bass riff; UK number one from Hot Space, later central to the Vanilla Ice "Ice Ice Baby" dispute.
Under Pressure (album)
Under Pressure is Logic's 2014 debut studio album on Def Jam/Visionary Music Group, executive-produced by No I.D. and largely produced by 6ix. Featureless standard edition, No. 4 Billboard 200 debut, RIAA platinum, Metascore 72; followed by sequel No Pressure.