the purging of the emotions or relieving of emotional tensions, esp. through certain kinds of art, as tragedy or music.

Medicine/Medical . purgation.

Psychiatry .

psychotherapy that encourages or permits the discharge of pent-up, socially unacceptable affects.

discharge of pent-up emotions so as to result in the alleviation of symptoms or the permanent relief of the condition.

noun

dirtying

noun

ablution , abreaction , cleansing , expurgation , lustration , purgation , purification , release , evacuation , excretion