General meaning:
* royal: _royal_
Referring to a king or queen:
* royal: _royale_ (feminine) or _royal_ (masculine)
Referring to a member of the royal family:
* royal: _royal_
Referring to something belonging to or connected with a king or queen:
* royal: _royal_
Examples:
* "The royal family" - _La famille royale_
* "A royal wedding" - _Un mariage royal_
* "Royal blue" - _Bleu royal_
It's important to consider the context to choose the most accurate translation.