1. A result or conclusion whose validity, fairness, or accuracy is doubtful or open to dispute
The referee's decision was a questionable outcome that angered the team.
A decisão do árbitro foi um resultado questionável que irritou o time.
2. An ending or result of an event or process that raises concerns or uncertainties
The election's questionable outcome led to a recount.
O resultado questionável da eleição levou a uma recontagem.