not having the right knowledge, experience, or education to do something:
He was unqualified for the job.
unqualified to do something
I feel unqualified to advise you.
2 [usually before noun]
used for emphasizing that a quality is complete and total:
The experiment had not been an unqualified success.
He gave her his unqualified support.
! Do not confuse with disqualified, which means 'officially not allowed to do something': She was disqualified from driving.