1. In a manner that can be contested, disputed, or challenged; in a way that is open to objection or debate
The witness's testimony was contestavelmente weak and unconvincing.
O testemunho da testemunha era contestavelmente fraco e pouco convincente.
2. In a questionable or debatable fashion; in a way that is not beyond dispute
The decision was contestavelmente justified by the committee.
A decisão foi contestavelmente justificada pelo comitê.