Really ticked off (5)
I believe the answer is:
irate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">really ticked off</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for irate that I've seen before include "I tear away, being annoyed" , "Extremely cross" , "A tier (anag)" , "having got in wax" , "Angry and incensed" .)