Moderate disposition (6)

I believe the answer is:

temper

This clue is a double definition.

'moderate' is the first definition.
(I know that moderate can be written as temper)

'disposition' is the second definition.
(I know that temper is a type of ill nature)

(Other definitions for temper that I've seen before include "Mood (often bad)" , "Mood, maybe angry" , "Tendency to become angry easily" , "Harden using heat" , "(Calm or furious) disposition" .)

I've seen this clue in The Globe and Mail.

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