I think it's monster threat level/aggro level towards you. Tanks normally have to get tons of malice to keep aggro on them, that way the target(s) doesn't go /crazy and aim the highest DPSing character.
FFXIV(Midgardsormr): Euler Breslau - 60 SMN, AST, SCH, WHM, BRD, BLM, CUL, GSM, BTN, MIN, LTW, CRP, WVR
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