1. the quality or state of being justifiable; the capacity to be shown to be just, right, or reasonable
The justifiability of his actions was questioned by the committee.
A justificabilidade de suas ações foi questionada pelo comitê.
2. the ability to provide valid reasons or evidence for something
We need to assess the justifiability of the budget increase.
Precisamos avaliar a justificabilidade do aumento orçamentário.