A contestant that you are matched against.

synonyms: opposite, opposition.

Roget 706: prevention, preclusion, obstruction, stoppage; embolus, embolism [Med.]; infarct [Med.]; interruption, interception, interclusion^†; hindrance, impedition^†; retardment^†, retardation; embarrassment, oppilation^†; coarctation^†, stricture, restriction; restraint etc. 751; inhibition etc. 761; blockade etc. (closure) 261.    interference, interposition; obtrusion; discouragement, discountenance.    impediment, let, obstacle, obstruction, knot, knag^†; check, hitch, contretemps, screw loose, grit in the oil.    bar, stile, barrier; [barrier to vehicles] turnstile, turnpike; gate, portcullis.    beaver dam; trocha^†; barricade etc. (defense) 717; wall, dead wall, sea wall, levee breakwater, groyne^†; bulkhead, block, buffer; stopper etc. 263; boom, dam, weir, burrock^†.    drawback, objection; stumbling-block, stumbling-stone; lion in the path, snag; snags and sawyers.    encumbrance, incumbrance^†; clog, skid, shoe, spoke; drag, drag chain, drag weight; stay, stop; preventive, prophylactic; load, burden, fardel^†, onus, millstone round one's neck, impedimenta; dead weight; lumber, pack; nightmare, Ephialtes^†, incubus, old man of the sea; remora.    difficulty etc. 704; insuperable etc. 471; obstacle; estoppel [Law]; ill wind; head wind etc. (opposition) 708; trammel, tether etc. (means of restraint) 752; hold back, counterpoise.    [person who hinders] damper, wet blanket, hinderer, marplot, killjoy; party pooper [Coll.]; party crasher, interloper.    trail of a red herring; opponent etc. 710.    ... show more

Dutch: opponent, verzet, tegenstand, tegenwerking, tegenpartij, oppositie, oppositiepartij

Someone who offers opposition.

synonyms: adversary, antagonist, opposer, resister.

Roget 710: opponent, antagonist, adversary; adverse party, opposition; enemy etc. 891; the other side; assailant.    oppositionist, obstructive; brawler, wrangler, brangler^†, disputant; filibuster [U.S.], obstructionist.    malcontent; Jacobin, Fenian; demagogue, reactionist^†.    rival, competitor.    bete noir [Fr.].    ... show more

Roget 891: enemy; antagonist; foe, foeman^†; open enemy, bitter enemy, opponent etc. 710; back friend.    public enemy, enemy to society.   

Dutch: antagonist, anti, opponent, tegenpartij, tegenstander, tegenstemmer, tegenstrever, wederpartij

Characterized by active hostility:
— Opponent (or opposing) armies.

synonym: opposing.