Not having the required qualification, license, or certification; unlicensed or unqualified for a role or activity.
無資格のまま医療行為を行うのは違法だ。
Performing medical procedures without qualification is illegal.
この仕事は資格が必要なので、無資格の人は応募できない。
This job requires qualifications, so unqualified people cannot apply.
無資格で講師を名乗っていたことが発覚した。
It was discovered that he had been calling himself an instructor without qualifications.