What is the antonym for temperament?

There isn't a single perfect antonym for "temperament" because it's a complex word with several possible meanings.

Here are some options depending on the specific context:

For "temperament" meaning emotional nature:

* Calmness

* Equanimity

* Serenity

* Composure

* Phlegmatic (meaning slow to anger)

For "temperament" meaning disposition or personality:

* Uncharacteristic (not typical)

* Inconsistency (lack of uniformity)

* Changeability (prone to change)

* Plasticity (malleability)

For "temperament" meaning artistic style:

* Mediocrity

* Unoriginality

* Cliché

Ultimately, the best antonym for "temperament" depends on the specific meaning you want to convey.