Antonym: defender. Similar words: challenge, challenged, challenging, floating exchange rate, messenger, passenger, scavenger, exchange rate. Meaning: ['tʃælɪndʒə] 
n. the contestant you hope to defeat.
n. the contestant you hope to defeat. 
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1, Her nearest challenger is the vice-president.
2, Determining how the Democratic challenger would conduct his presidency isn't quite so obvious.
3, The Frenchman held his own against the challenger.
4, The champion decked the challenger in the second round.
5, The champion dropped the challenger in the fourth round.
6, The world champion conquered yet another challenger last night.
7, The judges gave the nod to the winning challenger.
8, The champion and the challenger meet next week.
9, The challenger was dumped twice but won the fight.
10, Lewis is his main challenger for the world title.
11, This could be the winning game for the challenger, who only needs two more points for the championship.
12, One heavy blow to the chin and the challenger went out like a light.
13, The challenger delivered a series of punches to the champion.
14, Draskovic has emerged as the strongest challenger to the leader of the Serbian government.
15, The challenger has been training hard for the big fight.
16, Challenger shrugged,(sentencedict.com) but tossed the football as requested.
17, Many of the Challenger children have grown to adulthood.
18, The 50-year-old incumbent and the 72-year-old challenger appeared equally relaxed, forceful and well rehearsed.
19, Communism was the powerful outside challenger that held ethnic forces in check elsewhere.
20, As he proceeded,[http://sentencedict.com/challenger.html] both Challenger and Summerlee looked increasingly astonished.
21, There came a roar of rage from Challenger, and Sherlock Holmes hastily flung open the door.
22, The army plans later to fit Challenger with a new gun operating at even higher pressure and firing an improved shell.
23, On the Glomar Challenger, and back on shore, Hall met others who shared his enthusiasm for the ocean floor.
24, Six of the Challenger crew members are represented on the national Challenger Center board by their surviving spouses.
25, The world champion was dethroned by a young Swedish challenger.
26, The champion successfully defended his title against the American challenger.
27, The world champion was dethroned in the third round of the match by a young challenger.
28, The Republican Senator won a third term by a razor-thin edge over his Democratic challenger.
29, This morning there came an invitation from one Professor Challenger of Imperial College: he believed he could explain the matter.
30, Yet the queasy feeling persists among Democrats and Republicans that the accident-prone challenger may still collapse before reaching that final hurdle.
More similar words: challenge, challenged, challenging, floating exchange rate, messenger, passenger, scavenger, exchange rate, fixed exchange rates, length, lengthen, lengthy, avenge, at length, lozenge, revenge, lengthways, scavenge, vengeful, engender, serengeti, chalk, chalet, lengthwise, arm's length, wavelength, vengeance, revengeful, fallen, anger.