(intransitive) To be in opposition; to contest; to dispute; to vie; to quarrel; to fight. / (intransitive) To struggle or exert oneself to obtain or retain possession of, or to defend.

present participle of contend

contention

Someone who competes with one or more other people. / Someone who has a viable chance of winning a competition.

simple past tense and past participle of contend

plural of contender

Third-person singular simple present indicative form of contend

(obsolete) An antagonist; a contestant.

plural of contendent

plural of contending