Anxious or easily agitated (7)
I believe the answer is:
nervous
I believe this is a double definition.
'anxious' is the first definition.
(I know that anxious can be written as nervous)
'easily agitated' is the second definition.
(I've seen this before)
(Other definitions for nervous that I've seen before include "Highly-strung" , "'Apprehensive, uneasy (7)'" , "Fidgety" , "Tense" , "Jittery" .)