1. A standard or principle for judging or deciding something that is unclear, vague, or open to multiple interpretations
The ambiguous criterion for hiring made it difficult for candidates to prepare adequately.
O critério ambíguo para contratação dificultava a preparação adequada dos candidatos.
2. A measure or benchmark that lacks precision and can be understood in different ways by different people
The teacher's ambiguous criterion for grading essays led to student complaints.
O critério ambíguo do professor para avaliar redações provocou reclamações dos alunos.