Is there a word or phrase to describe someone who is not formally trained at something — yet he/she is good at it?
The person could be good at drawing/art, or mathematics, or carpentry, or boxing, or a musical instrument, etc.
I thought the word for what I described is "untutored" because according to Collins Dictionary:
untutored, adjective. "If someone is untutored, they have not been formally trained to do something, although they may be quite skilled at it."
One of the two example sentences Collins offered was:
'This untutored mathematician had an obsession with numbers.'
So because of Collins's definition, I took "untutored" as having to do with innate abilities, like a kid who happens to draw so great, or have a knack for a musical instrument — before any formal training.
But the problem is no other dictionary defines "untutored" this way. All the others define it along the lines of "lacking in schooling".
So any help in describing being good at something without being trained in it would be appreciated.