'Debonair' means attractive, carefully dressed, and confident.
Option A - 'Superficial' means never thinking about things that are serious or important. Thus option A is incorrect.
Option C - 'Fashionable' means popular at a particular time. Thus option C is incorrect.
Option D - 'Flighty' means not responsible and likely to change activities. Thus option D is incorrect.
Option B - 'Charming' means pleasant, confident and attractive. Thus option B is the correct answer.
'Debonair - Charming'