noun
savant
suh-VAHNT/səˈvɑːnt/
Someone with exceptional knowledge or skill in a particular field.
The mathematical savant studies an intricate geometric construction.

Etymology
A savant is literally someone “knowing”: a description meaning “learned” became a noun for a learned person. The word came to emphasize distinguished learning or expertise.
In context
doug is my crypto savant like if i have a question about crypto i always ask him
More examples
- A musical savant, she can identify any chord by ear.
- The conference brings together savants from several branches of mathematics.
- He is a financial savant with a gift for spotting trends.
Forms
savant · savants