Subduing means to bring under control or to make less intense.
Subduing can have a serious or forceful feeling. It usually means making something calm or less strong.
Examples:
The police are subduing the robber.
She is subduing her fear of spiders.
He is subduing the fire with water.
The teacher is subduing the noisy class.
The superhero is subduing the villain with his powers.
I am subduing my excitement about the party.