1. (noun) sphere, domain, area, orbit, field, arena
a particular environment or walk of life
Synonyms: study, compass, land, heavens, sphere, demesne, knowledge base, field of study, plain, empyrean, welkin, ambit, sector, range, scope, eye socket, field of operations, country, subject field, reach, flying field, subject area, vault of heaven, celestial sphere, expanse, area, force field, line of business, sphere of influence, theater of operations, battlefield, theatre of operations, orbital cavity, bailiwick, stadium, playing area, field of view, champaign, scene of action, theatre, battleground, airfield, knowledge domain, cranial orbit, world, electron orbit, playing field, theater, discipline, region, firmament, field of operation, field of force, sports stadium, bowl, landing field, subject, domain, field of honor, arena, surface area, domain of a function, field, field of battle, orbit, celestial orbit, athletic field
2. (noun) arena
the central area of an ancient Roman amphitheater where contests and spectacles were held; especially an area that was strewn with sand
Synonyms: sphere, domain, bowl, stadium, field, orbit, scene of action, sports stadium, area
3. (noun) stadium, bowl, arena, sports stadium
a large structure for open-air sports or entertainments
Synonyms: roll, pipe bowl, bowlful, domain, arena, trough, area, bowl, stadium, sphere, field, orbit, scene of action, sports stadium, bowling ball
4. (noun) arena, scene of action
a playing field where sports events take place
Synonyms: sphere, domain, arena, bowl, stadium, field, orbit, scene of action, sports stadium, area
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Synonyms for arena 
