Imperturbability in a sentence as a noun

It doesn't mean "calmness" or "imperturbability", in this context. One form of the practice would be to consider those to whom you feel most warmly, and reflect that in previous lives they might have murdered you.

Imperturbability definitions

noun

calm and unruffled self-assurance; "he performed with all the coolness of a veteran"

See also: coolness imperturbableness