self-taught
adjectiveUK /ˌself ˈtɔːt/
US /ˌself ˈtɑːt/
Someone who is self-taught learned something by themselves without a teacher.
She is a self-taught guitar player who learned by watching videos.
OTHER MEANINGS
2. Learned or done without formal lessons or a teacher.
His self-taught coding skills got him a job at a tech company.
3. Having knowledge gained from your own practice and reading.
The self-taught chef opened her own restaurant.
4. A skill you pick up on your own rather than in school.
Painting was a self-taught hobby for him.