deescalation

verb (used with or without object), de-es·ca·lat·ed, de-es·ca·lat·ing.

1. to decrease in intensity, magnitude, etc.: to de-escalate a war.

verb

1. to reduce the level or intensity of (a crisis, etc)

v.

also deescalate, 1964, from de- + escalate. Related: De-escalated; de-escalating; de-escalation.