Wordnet 3.0
ADJECTIVE (1)
1. 
 having become involved involuntarily; 
- Example: "caught up in the excitement of the crowd"- Example: "caught up in the scandal"
WordNet (r) 3.0 (2006):
caught up
    adj 1: having become involved involuntarily; "caught up in the
           excitement of the crowd"; "caught up in the scandal"