rapt
adjective /ræpt/
  /ræpt/
 - so interested in one particular thing that you are not aware of anything else
- a rapt audience
 - She listened to the speaker with rapt attention.
 - He watched her with a rapt expression.
 - Jill stared at them blankly, rapt in thought.
 
Oxford Collocations DictionaryRapt is used with these nouns:- attention
 - expression
 - face
 - …
 
Word Originlate Middle English (in the sense ‘transported by religious feeling’): from Latin raptus ‘seized’, past participle of rapere.