certify
🇺🇸
/ˈsɜːrtɪfaɪ/
🇬🇧
/ˈsɜːtɪfaɪ/
to officially say something is true in writing
The company will certify that these products are safe to use.
to give someone an official paper showing they can do a job
She needs to certify that she is qualified to teach children.
to officially say someone has a serious mental illness
The doctor must certify that the patient needs special care.