unable

"The student's ability to concentrate in noisy environments was crucial for success in the class. "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"to die by an accident"

"My life lacks excitement."

"The new software is very able; it's easy to learn and use. "

"The accident completely disabled the athlete, taking away his ability to run. "

"The house's exterior needed a fresh coat of render. "

"My son plays soccer after school every Wednesday. "

"Unfortunately, the heavy rain prevented the soccer game from taking place. "

"My uncle owns a small business selling handmade jewelry. "

"The certain success of the project was a relief to the team. "

"Despite advancing age, his mind was still as sharp as ever."