unqualified; unlicensed; uncertified
Describes a person or entity lacking the necessary qualifications, license, or certification for a role or activity. Often used in legal, professional, and formal contexts.
Providing legal advice without a license is prohibited.
彼は無資格のまま医療行為をしていた。
He was practicing medicine without being qualified.
He performed the surgery without being licensed to do so.
It was discovered that an unlicensed doctor had been examining patients.