13-letter words containing a, b, o, r
- fume cupboard — vent used in a laboratory
- funambulatory — relating to tightrope-walking
- gabrilowitsch — Ossip [aw-syip] /ˈɔ syɪp/ (Show IPA), 1878–1936, Russian pianist and conductor, in America.
- garcia robles — Alfonso [al-fon-soh,, -zoh;; Spanish ahl-fawn-saw] /ælˈfɒn soʊ,, -zoʊ;; Spanish ɑlˈfɔn sɔ/ (Show IPA), 1911–91, Mexican diplomat: Nobel Prize 1982.
- ge-pano-carib — a linguistic phylum comprising a large number of aboriginal languages with scattered distribution in South America east of the Andes.
- gerontophobia — a fear of old people.
- ghettoblaster — Alternative form of ghetto blaster.
- global search — a word-processing operation in which a complete computer file or set of files is searched for every occurrence of a particular word or other sequence of characters
- globe theatre — a theater on the south bank of the Thames in London, 1599–1613: many of Shakespeare's plays were first produced here.
- go over-board — over the side of a ship or boat, especially into or in the water: to fall overboard.
- go to bat for — Sports. the wooden club used in certain games, as baseball and cricket, to strike the ball. a racket, especially one used in badminton or table tennis. a whip used by a jockey. the act of using a club or racket in a game. the right or turn to use a club or racket.
- gobar numeral — any of a set of ancient numerals derived from Hindu numerals
- good behavior — satisfactory, proper, or polite conduct.
- governability — to rule over by right of authority: to govern a nation.
- graffiti-bomb — Military. a projectile, formerly usually spherical, filled with a bursting charge and exploded by means of a fuze, by impact, or otherwise, now generally designed to be dropped from an aircraft.
- grave-robbing — a person who steals valuables from graves and tombs: Graverobbers had emptied the Mayan tomb before archaeologists could examine its contents.
- great lobelia — a North American plant, Lobelia siphilitica, having long, showy clusters of blue flowers.
- groundbreaker — a person who is an originator, innovator, or pioneer in a particular activity.
- grylloblattid — a primitive insect of the order Grylloblattidea, having a soft, unpigmented wingless body with long antennae and no eyes, living under stones in moderately high mountains of the western U.S., Japan, and the U.S.S.R.
- gubernatorial — of or relating to a state governor or the office of state governor.
- habeas corpus — a writ requiring a person to be brought before a judge or court, especially for investigation of a restraint of the person's liberty, used as a protection against illegal imprisonment.
- haber process — a process for synthesizing ammonia from gaseous nitrogen and hydrogen under high pressure and temperature in the presence of a catalyst.
- habit-forming — tending to cause or encourage addiction, especially through physiological dependence: habit-forming drugs.
- halobacterium — Any of various extremophiles, of genus Halobacterium, found in water saturated or nearly saturated with salt.
- harbor master — an official who supervises operations in a harbor area and administers its rules.
- harbourmaster — (British, Canada, nautical) An official responsible for the enforcement of regulations in a port.
- harold burton — Harold Hitz [hits] /hɪts/ (Show IPA), 1888–1964, associate justice of the U.S. Supreme Court 1945–58.
- heart problem — a defect or disease of the heart
- heart trouble — cardiac condition
- heartbrokenly — In a heartbroken manner.
- heaven forbid — You say 'Heaven forbid!' to emphasize that you very much hope that something will not happen.
- heli-boarding — the sport of snowboarding on mountains or glaciers accessible only by helicopter or skiplane
- hepatobiliary — Of, pertaining to, or originating in the liver, bile ducts and gallbladder.
- herb of grace — rue2 .
- herb-of-grace — rue2 .
- herborization — the act or process of herborizing
- hermosa beach — a city in SW California, near Los Angeles.
- heteroblastic — (of a plant or plant part) showing a marked difference in form between the juvenile and the adult structures
- hiberno-saxon — having the characteristics of both the Irish and English; Anglo-Irish.
- honey buzzard — a long-tailed Old World hawk, Pernis apivorus, that feeds on the larvae of bees as well as on small rodents, reptiles, and insects.
- honorableness — The property of being honorable.
- honourability — A state or condition or being honourable.
- horse-breaker — a person who breaks in a horse
- horseshoe bat — any of numerous large-eared Old World insectivorous bats, mostly of the genus Rhinolophus, with a fleshy growth around the nostrils, used in echolocation: family Rhinolophidae
- hot-water bag — a bag, usually of rubber, for holding hot water to apply warmth to some part of the body, as the feet.
- housebreakers — Plural form of housebreaker.
- housebreaking — to train (a pet) to excrete outdoors or in a specific place.
- hunt saboteur — A hunt saboteur is someone who tries to stop a hunt from taking place or being successful because they believe it is cruel to the animal being hunted.
- hybridisation — Alternative form of hybridization.
- hybridization — to cause to produce hybrids; cross.