(cfm) Related to anger? - NO
(Gusset Login) Proof? - NO (see my last reply to Phil)
(NotJohn) Silent P? - NO. A noisy one :)

Flailing around in the dark, because frankly I'm stumped.

(Quendalon) Suffix? NO - nor an 'ology' or 'ism'

--- begins with a P and also contains the letters m, s and i within. One word. A human trait which is neither gender nor geographically related. Desirable to some but probably rather annoying for others.
This particular word has another use and is key to a scientific/mathematical/philosophical principle which was the subject for an AVMA in 2005.

While I try to think of another way in.

Thank you and well played NotJohn - was hoping for an early solution today as I am in need of rescue ...
For me - Parsimony is frugality or excessive economy which was my starting point all those days ago. As for the secondary meaning - Occam's Razor was the subject of the AVMA (with the principle of parsimony at its technical core).

And I used the word 'rescue' advisedly. My daughter has just gone into early labour and I may needed at the hospital ...
*swiftly hands over baton to NotJohn on way out*

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[Chalky] Hope it all goes well
Yes, the mathematical and philosophical connotations did come to me after I'd thought of the word.
Now maybe I can remedy the unsatisfactory end to the previous game by suggesting that Raak gets his belated turn.