1. individuals whose identity, status, or characteristics are not definitely known or established
The witness described uncertain persons lurking near the building.
A testemunha descreveu pessoas incertas rondando perto do edifício.
2. people who are hesitant, indecisive, or doubtful about something
The uncertain persons in the group debated whether to proceed with the plan.
As pessoas incertas do grupo debateram se deveriam prosseguir com o plano.