Qualified = (1) certified, officially recognized; having the necessary qualifications.
- There is a training programme for the newly qualified doctors.
- He’s a highly qualified engineer.
- We’ve to verify his academic qualifications before giving him such a responsible job.
- I am not qualified to give you advice on technical aspects of your project.
- Previous experience is an essential qualification for this job.
- She has all the right qualifications to be a good teacher.
(2) limited, not complete or absolute ; modified in some way.
- The auditor gave a qualified report on the balance sheet of the company.(i.e he gave a report with some comments)
- We can accept the proposal only with some qualifications on the terms of payment of rent. (i.e can be accepted only with some changes/conditions)
- A qualified approval. ( approval with some limiting factors)
Unqualified = not having suitable knowledge or qualifications.
- He is quite unqualified to talk on this subject.
- The Bank would not permit an unqualified accountant to audit its books.
(2) total; without limitation or reservation.
- The auditor gave an unqualified report on the balance sheet. ( i.e a report without comments)
- The proposal has the unqualified support of the entire team. (i.e full support)
Qualify = to have or achieve the necessary skills etc.
- This course will qualify you to work in a bank.
- She doesn’t qualify for LFC/LTC benefits before putting in the prescribed period of service.
Disqualify = to stop someone from being in a competition/ or doing something.
- He has been disqualified from the championship.
- His bad behaviour resulted in the disqualification.