1. A situation or subject that is not clearly defined, ambiguous, or falls between two clear categories
The legal status of cryptocurrency remains a grey area.
O estatuto legal da criptomoeda permanece uma zona cinzenta.
2. An area of uncertainty or moral ambiguity where rules are unclear
There's a grey area between what is considered ethical and unethical in business.
Existe uma zona cinzenta entre o que é considerado ético e antiético nos negócios.