1. A single, independent action or occurrence that stands alone and is not part of a pattern or series
The incident was just an isolated act and not indicative of a larger problem.
O incidente foi apenas um ato isolado e não indicativo de um problema maior.
2. In legal or institutional contexts, an action taken without authorization or connection to official policy
The company claimed the employee's misconduct was an isolated act.
A empresa afirmou que a conduta inadequada do funcionário foi um ato isolado.