strong-minded

He will need to be strong-minded to work within the new set-up, working in tandem with it while marrying his own ideas on to those above him.

Morgan was a strong-minded leader with the vision, while Bayliss wouldn't speak to the group unless it was absolutely necessary.

"Isobel was strong-minded, funny, sassy and she was kind, helpful and caring. She was wonderful," added Mrs Sheppard.

Sheinbaum Pardo’s mother has little doubt that her daughter’s scientific mindset will help make her a decisive and strong-minded president.

“Oh, he’s a very, very strong-minded guy,” Frank said.