Inexperienced?
The word incompetent is an adjective, a word that describes a noun; for example an incompetent mechanic or an incompetent barber.
There are no perfect rhymes for the word incompetent.
this girl was lazy and incompetent in the competition.
You are not only lazy but also incompetent in your work.
incompetent
She was an incompetent girl in academics, although she didn't think so.
If an employee does not have the necessary skills or the job they are doing, they are incompetent in that career.
The word incompetent is an adjective and so doesn't have any tenses. Only verbs have tenses.
Incompetent.
An antonym for the word "incompetent" is "efficient."
Unprepared is one that comes to mind
Incompetent is a meaningful word. It begins with i.