Definition of "buoyantly"

He's the FBI agent antagonist in Catch Me if You Can (2002) opposite a buoyantly charming young Leonardo DiCaprio as con artist Frank Abagnale, but his character is more of a determined cat to Leo's mouse than a real foil; he's simply a prim Eisenhower-era man with a job to do.

2021 February 9, Christina Newland, “Is Tom Hanks part of a dying breed of genuine movie stars?”, in BBC‎