Faced with expert (3)
I believe the answer is:
ace
'expert' is the definition.
(ace can informally mean very good)
'faced with' is the wordplay.
'with' indicates a hidden word.
'ACE' can be found hidden inside 'faced'.
(Other definitions for ace that I've seen before include "Brilliant" , "'wicked'!" , "Crack" , "Top card or winning tennis serve" , "Possibly a diamond" .)