be a (something) to (one's) fingertips

To be a particular thing to the utmost degree. Oh, I'm a student to my fingertips—that's why I'm now pursuing a doctorate.

Name	Pronounced	Usage
Shiphrah	-	Biblical
Ragnvaldr	-	Ancient Scandinavian
Ljubena	-	Macedonian
Dusty	DUS-tee	English
Godgifu	-	Anglo-Saxon
Agni	-	Hinduism, Indian, Hindi