The girl didn't talk that much and was shy all the time. She was socially inept.
"Those who are inept at answering questions should devote their time to something they are better at."
I found all the employees at my mother's car wash lazy and inept.
The lawyer's handling of the divorce was inept. Your performance review reveals that you have a poor work ethic and are generally inept.
When it has a subject, verb, punctuation, capitalization, a predicate, and a complete thought. A sentence is a sentence when it is handed down by a judge (or a magistrate).