uncontestable

noun

1. a race, conflict, or other competition between rivals, as for a prize.
2. struggle for victory or superiority.
3. strife in argument; dispute; controversy: Their marriage was marred by perpetual contest.

verb (used with object)

4. to struggle or fight for, as in battle.
5. to argue against; dispute: to contest a controversial question; to contest a will.
6. to call in question: They contested his right to speak.
7. to contend for in rivalry.

verb (used without object)

8. to dispute; contend; compete.

noun (ˈkɒntɛst)

1. a formal game or match in which two or more people, teams, etc, compete and attempt to win
2. a struggle for victory between opposing forces or interests

verb (kənˈtɛst)

3. (tr) to try to disprove; call in question
4. (when intr, foll by with or against) to fight, dispute, or contend (with)contest an election

v.c.1600, from French contester “dispute, oppose,” from Middle French, from Latin contestari (litem) “to call to witness, bring action,” from com- “together” (see com-) + testari “to bear witness,” from testis “a witness,” (see testament). Calling witnesses as the first step in a legal combat. Related: Contestable; contested; contesting. n.1640s, from contest (v.).