pacification (n.)

• abatement
• alleviation
• armistice
• assuagement
• calming
• cease-fire
• deadening
• diminution
• easing
• hushing
• leniency
• lessening
• letdown
• letup
• lightening
• loosening
• mitigation
• modulation
• mollification
• palliation
• peace
• reduction
• relaxation
• remission
• slackening
• softening
• stand-down
• tempering
• truce