Stupid ritual fellow cut down by two thirds, leading to angry conflict (6)

I believe the answer is:

strife

I'm a little stuck... Click here to teach me more about this clue!

'conflict' is the definition.
(I know that strife is a type of conflict)

I don't understand the remainder of the clue.

(Other definitions for strife that I've seen before include "Bitter conflict" , "Struggle" , "Trouble and conflict" , "'Discord, conflict (6)'" , "Trouble, hassle" .)

I've seen this clue in The Irish Times.

Want a hint initially instead of a full solution? Install my app