Concerned (7)
There are a few possibilities for this:
interested
'concerned' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for anxious that I've seen before include "Nervy" , "Uneasy, worried" , "Worried, nervous" , "Fretful, worried" , "Apprehensive, uneasy" .)
'concerned' is the definition.
('worry' can be a synonym of 'concern')
This is all the clue.
(Other definitions for worried that I've seen before include "Felt or caused to feel anxious or troubled" , "Afraid" , "Concerned, anxious, troubled" , "far from calm" , "Was unduly anxious" .)
'concerned' is the definition.
(I know that concerned can be written as interested)
This is all the clue.
(Other definitions for interested that I've seen before include "Wanting to know" , "Showing curiosity" , "Partisan" , "Concerned" , "prejudiced" .)