apprehensive (
http://definr.com/apprehensive)
adj 1: quick to understand; "a kind and apprehensive friend"-
Nathaniel Hawthorne [syn:
discerning]
2: mentally upset over possible misfortune or danger etc;
worried; "anxious parents"; "anxious about her job"; "not
used to a city and anxious about small things"; "felt
apprehensive about the consequences" [syn:
anxious]
3: in fear or dread of possible evil or harm; "apprehensive for
one's life"; "apprehensive of danger"