analgesia (n.)

• abatement
• alleviation
• anesthesia
• appeasement
• assuagement
• callousness
• deadening
• deadness
• diminution
• dullness
• ease
• easement
• easing
• inconsiderateness
• insensibility
• insensitiveness
• insensitivity
• insentience
• lessening
• mitigation
• mollification
• narcosis
• neurasthenia
• numbness
• obtuseness
• palliation
• paresthesia
• pica
• reduction
• relief
• remedy
• softening
• unfeelingness
• unperceptiveness