to your fingertips

Through and through; thoroughly; in every manner or respect. Oh, I'm a student to my fingertips—that's why I'm now pursuing a doctorate. Though he grew up in America, Henry is still a Brit to his fingertips.

to your fingertips

totally; completely.

1991 Sun McMahon, a professional to his fingertips, gave it his best shot even though an injury at this delicate stage could have sabotaged the last big move of his career.

to your ˈfingertips

(British English) (of a particular type of person) completely; in every way: He is an artist to his fingertips. ♢ She’s a professional to her fingertips.