true-blue
🇺🇸
/ˌtruː ˈbluː/
🇬🇧
/ˌtruː ˈbluː/
A person who strongly supports a particular group or idea.
He is a true-blue fan of the local football team.
A person or thing that is a perfect example of a certain type or quality.
She is a true-blue artist with a unique style.