IPA: /ʌnˈsɜːrtɪfaɪd/
KK: /ʌnˈsɜrtɪfaɪd/
Not officially verified or recognized as meeting certain standards or qualifications.
The uncertified teacher was not allowed to lead the class.
Uncertified → It is formed from "un-" (meaning not) and "certified" (from Latin "certificare", meaning to make certain or to confirm). The word "uncertified" means not confirmed or not officially recognized as valid.
Think of 'not' ('un-') confirming something ('certified') — that's why 'uncertified' means something that hasn't been confirmed.