alleviative vs mitigatory

alleviative and mitigatory both are adjectives.

Word	Noun	Adjective	Verb	Adverb
alleviative	No	Yes	No	No
mitigatory	No	Yes	No	No

As adjectives, alleviative and mitigatory are synonyms defined as:

alleviative and mitigatory: moderating pain or sorrow by making it easier to bear

Other synonyms of alleviative include alleviatory, lenitive, mitigative, palliative.

alleviative (adjective)	mitigatory (adjective)
moderating pain or sorrow by making it easier to bear	moderating pain or sorrow by making it easier to bear