She 'is' widely/generally 'acknowledged' as one of the world's best chefs. [=many people regard her as one of the world's best chefs]
He refuses to 'acknowledge' the authority of the court. [=he denies that the court has authority]
The players 'acknowledged' their fans by waving their hands and blowing kisses into the crowd.
(..) Well, beta testing, role-playing. We go live at the end of the month. Kyle, you're running through the events too quickly. You need to give them time to acknowledge each statement, okay? It's a legal thing. -Ryan? -Yeah. There's more? This is ridiculous. But, you know, Legal's really starting to (..)2009 Up in the Air