Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z groundbreaker First person to do, make or fight for something. A pioneer; a seminal person. groundbreaking Innovative; new, different; doing something that has never been done before. groundbreakingly In a groundbreaking manner. groundburst The explosion of a bomb dropped from the air when it hits the ground. groundcar A car unable to fly (as opposed to a flying car). groundcedar A club moss of the genus Diphasiastrum, especially Diphasiastrum complanatum or Diphasiastrum digitatum. groundcherry Any of various plants in the genus Physalis and their fruits groundcloth Synonym of groundsheet. groundcraft Any vehicle that can only operate on solid ground. groundcreeper The canebrake groundcreeper groundcrew The crew that handles and maintains aircraft on the ground. grounded Not allowed to fly. groundedly In a grounded or firmly established manner. groundedness The quality of being grounded. grounder A ground ball. grounders A playground game in which one person is chosen to be "it" (and must keep their eyes shut) and tries to tag others, who become "it" instead, either by touching them or by calling out "grounders" while they are on the ground (rather than on a climber). groundfire Gunfire directed at aircraft from the ground. groundfish Any of many fish that swim near the seafloor: a demersal fish. groundfisherman A person who fishes for groundfish groundfishing Fishing for groundfish: demersal fishing. groundhog A red-brown marmot, Marmota monax, native to North America. groundhogese A supposed language in which groundhogs and humans can communicate with each other. groundhopper A small insect, of the genus Tetrix, similar to a grasshopper. groundhopping The hobby of attending sports matches at as many different stadiums or grounds as possible. groundhunter A Madagascar groundhunter, a bird of species (Mystacornis crossleyi, sole species of its genus. grounding Fundamental knowledge or background in a field or discipline. groundlaying The creation of a foundation or base. groundless Without any grounds to support it; baseless. groundlessly In a groundless manner; without justification. groundlessness The state or condition of being groundless. groundline A line drawn to signify the surface of the ground, especially in architectural blueprints and in drawings by children which lack dimension. groundliness The quality of being groundly. groundling Any of various plants or animals living on or near the ground, as a benthic fish or bottom feeder, especially groundlubber Someone who does not regularly travel to space. groundly Firmly grounded; solid; of education: complete, thorough, well-grounded. groundmass The matrix of fine-grained crystalline material in which larger crystals are embedded. groundmist A low-lying fog. groundnut A climbing vine, Apios americana, of eastern North America, having fragrant brownish flowers and small edible tubers. groundpecker A species of bird in the tit family Paridae, Pseudopodoces humilis. groundpig Synonym of groundhog. groundpiggy Synonym of groundhog. groundplan A diagram showing the physical layout of a set, especially the placement of structures on the stage, as opposed to items on the walls or suspended from the ceiling. groundplasm Synonym of cytosol groundplot The part of the ground that is covered by a building. groundprox A ground proximity warning system. groundrow A low, narrow flat used to suggest the presence of a building, fence, hedge, etc. grounds Basis or justification for something. groundscraper A relatively short but extremely wide or long building. groundsel Any of several widely-distributed plants, of the genus Senecio, having yellow, daisylike flowers. groundselbush The shrub Baccharis halimifolia. groundseltree Synonym of groundselbush. groundset A vector space upon which matroids may be paved groundshaking The shaking of ground during seismic activity. groundshare The sharing of a sports ground between two or more teams. groundsheet A sheet of waterproof material that is spread on the ground, often beneath a tent, and upon which a person may sit or sleep. groundside Towards or on the surface of a planet. groundsider Someone who lives on the ground (as opposed to space). groundsill A timber beam used as the foundation for a building. groundskeeper Someone who takes care of the upkeep of grounds (gardens, a playing field, woodlands, etc.) groundskeeping The activity of tending an area of land for aesthetic or functional purposes; typically as an employee of a person or institution groundsman A male groundskeeper. groundspeed The horizontal speed of an aircraft relative to the ground. groundstaff The staff who maintain the grounds of a school, sports facility, etc. groundstone A simple neolithic stone tool made by grinding. groundstreak Any of the butterflies of the group Lamprospilus within the tribe Eumaeini. groundstroke A forehand or backhand shot that is executed after the ball has bounced once on the court. groundstroking The use of groundstrokes. groundswell A broad undulation of the open ocean, often as the result of a distant disturbance. groundswoman The female equivalent of a groundsman. groundtrack The path on the planetary surface directly beneath a satellite's or aircraft's trajectory. groundwall A wall as foundation; a foundation. groundward Towards the ground. groundwards Towards the ground; groundward. groundwater Water that exists beneath the earth's surface in underground streams and aquifers. groundwatershed A watershed consisting of groundwater. groundwave A signal that propagates along the surface of the Earth. groundway In shipbuilding, a substantial foundation of wood or stone for the blocks on which a vessel is built. groundwood Wood that has been mechanically ground for pulp or direct use to produce certain kinds of paper or board; mechanical pulp. groundwork The foundation; the basic or fundamental parts that support or allow for the rest. groundworker A person who works on the ground, as opposed to an aviator, etc. groundworm earthworm groundy Of or relating to the ground; earthly group A number of things or persons being in some relation to one another. groupability The property of being groupable. groupable Capable of being grouped together. groupage The consolidation of several small shipments into a single container. groupality The sum total of the physical, mental, emotional, and social characteristics of a group of individuals; the organized pattern of behavioral characteristics of a group of individuals. groupcast The broadcast or display of digital content to a specific group. groupcentric With respect to the centre of a galactic group groupdom The fact of being a group. grouper Any of various large food and game fishes of the subfamily Epinephelinae, especially the genera Epinephelus and Mycteroperca, which inhabit warm seas. groupie A fan, especially a young female fan of a male singer or rock group, who seeks intimacy (most often physical, sometimes emotional) with a celebrity; usually with a rock 'n' roll artist or band member. groupiedom The world or sphere of groupies. groupieism Synonym of groupiedom (“state or period of being a groupie”). groupification The act or process of forming a group. groupify To form into a group. grouping A collection of things or people united as a group. groupish Tending to form groups; social. groupishly In a groupish manner. groupishness The quality of being groupish. groupism The habit or policy of associating in groups or cliques. groupist A proponent of groupism. grouplet A small group. grouplike Resembling or characteristic of a group. groupmate A member of the same group. groupment A temporary, improvised grouping of forces. groupmind A composite mind, the sum of several individual minds. groupness The quality of being a group. groupo Synonym of groupset. groupoid A magma: a set with a total binary operation. groupoidal Of or relating to groupoids. groupset A complete set of matching bicycle drive control components, including brake calipers, cranks, chainrings, bottom bracket, etc. groupspeak The jargon used by a particular group. groupthink A process of reasoning or decision-making by a group, especially one characterized by uncritical acceptance of or conformity to a perceived majority view. groupthinker One who engages in groupthink. groupuscular Of or pertaining to a groupuscule. groupuscule A small political group, especially of an extremist faction. groupware software designed to be used collaboratively by multiple users on a network groupwide Throughout a group. groupwise As a group groupwork Work done in groups. groupworker The leader of a groupwork session. groupy Tending to form or operate in groups. grouse Any of various game birds of the subfamily Tetraoninae which inhabit temperate and subarctic regions of the Northern Hemisphere; specifically, the red grouse (Lagopus scotica) native to heather moorland on the British Isles. grouseberry Synonym of grouse whortleberry. grouseless Without grouse (type of bird). grouselike Resembling or characteristic of a grouse. grouser A person who grouses; a grumbler. grousing Peevish complaining. grousy Tending to grouse or complain; irritable; grouchy. grout A thin mortar used to fill the gaps between tiles and cavities in masonry. grouter One who grouts. groutfit An entirely gray outfit. grouting An application of grout. groutite An orthorhombic-dipyramidal blue black mineral containing hydrogen, manganese, and oxygen. groutless Without grout. groutlike Resembling or characteristic of grout. grouts Tea leaves left in the bottom of the cup after drinking tea. groutwork Work done in grout. grouty Full of grout(s), that is, sediment. Grouville A parish in Jersey, Channel Islands, United Kingdom. Grovane A village in Vennesla municipality, Agder county, Norway. grove A small forest. groved Covered in groves. Grovedale A suburb of Geelong, Victoria, Australia grovel To be prone on the ground. Groveland A census-designated place in Tuolumne County, California, United States. groveler A person who grovels. groveless Without a grove or groves. groveling Showing excessive, servile respect or submission, often to gain favor or forgiveness.