Relating to or serving to alleviate; having the quality of reducing or relieving pain, suffering, or difficulty.
From alleviate plus the adjectival suffix -ory (pertaining to, serving to). This is a more formal variant of alleviative.
'Alleviatory' is the fancier cousin of 'alleviative'—both mean the same thing, but alleviatory sounds more medical and formal, showing how English builds hierarchies of formality into its vocabulary.
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