Angry rant (6)
I believe the answer is:
tirade
'angry rant' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tirade that I've seen before include "A prolonged outburst of abuse" , "Speech of violent denunciation" , "Verbal outburst" , "Blast of criticism" , "A long, vehement harangue" .)