The most appropriate antonym of the word "adept" is inept.
- Adept means "having or showing great skill or ability in a particular area."
- Inept means "lacking skill or ability; clumsy or bungling."
The other words do not have the opposite meaning of "adept."
- Expert means "having or showing great knowledge or skill in a particular area."
- Deft means "having or showing great skill or dexterity."
- Proficient means "having or showing a high level of skill or competence in a particular area."
|