—n.
1 a process of contending; a competition.
2 a dispute; a controversy.
—v.tr.
1 challenge or dispute (a decision etc.).
2 debate (a point, statement, etc.).
3 contend or compete for (a prize, parliamentary seat, etc.); compete in (an election).
Derivatives:
contestable adj. contester n.
Etymology: L contestari (as COM-, testis witness)
Useful english dictionary. 2012.