Reprimanded American's annoyed (6,3)
I believe the answer is:
ticked off
'reprimanded' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ticked off that I've seen before include "dressed down" , "Cross" , "Delivered carpeting" , "marked completed items?" , "Marked present" .)