lessening (n.)

• abatement
• abridgment
• alleviation
• analgesia
• anesthesia
• appeasement
• assuagement
• attenuation
• attrition
• calming
• chastening
• contraction
• curtailment
• cushioning
• cut
• cutting
• dampening
• deadening
• decrease
• decrement
• decrescendo
• deduction
• deflation
• depletion
• depreciation
• depression
• derogation
• detraction
• diminuendo
• diminution
• dip
• disparagement
• dwindling
• dying
• ease
• easement
• easing
• extenuation
• extraction
• hushing
• impairment
• leniency
• letdown
• letup
• lightening
• loosening
• lowering
• miniaturization
• mitigation
• modulation
• mollification
• pacification
• palliation
• reducing
• reduction
• relaxation
• relief
• remedy
• remission
• retraction
• retrenchment
• shortening
• shrinkage
• simplicity
• slackening
• softening
• subsiding
• subtraction
• tempering
• truncation
• waning
• weakening