1. A spontaneous or improvised spoken statement made without prior preparation or planning
The witness gave an extemporaneous statement to the police officer at the scene of the accident.
A testemunha fez uma declaração extemporânea ao policial no local do acidente.
2. In legal contexts, a statement made off-the-cuff or without being formally prepared in advance
The judge allowed the extemporaneous statement despite the lack of written documentation.
O juiz permitiu a declaração extemporânea apesar da falta de documentação escrita.