Confused tea with orangeade initially? Sign of nerves (7)
I believe the answer is:
chaotic
'confused' is the definition.
(confused can mean chaotic or muddled)
'tea with orangeade initially? sign of nerves' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'with' means one lot of letters go next to another.
'initially?' suggests taking the first letters (I've seen 'initially' mean this).
'sign of nerves' becomes 'tic' (as in a nervous tic).
The initial letter of 'orangeade' is 'o'.
'cha'+'o'+'tic'='CHAOTIC'
(Other definitions for chaotic that I've seen before include "Anarchic" , "Confused and disorderly" , "All over the place" , "mess" , "totally out of order?" .)