Alleviate

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late Middle English: from late Latin alleviat- ‘lightened’, from the verb alleviare, from Latin allevare, from ad- ‘to’ + levare ‘raise’, influenced by levis ‘light’.

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Borrowed from Late Latin alleviatus, past participle of alleviare(“to lighten”) ( ad-(“towards”) + levis(“light”)). Doublet of alegge.

etymonline

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alleviate (v.)

early 15c., " to mitigate, relieve (sorrows, suffering, etc.)," from Late Latin alleviatus, past participle of alleviare "lift up, raise," figuratively "to lighten (a burden), comfort, console," from assimilated form of Latin ad "to" (see ad-) + levis "light" in weight (from PIE root *legwh- "not heavy, having little weight"). Related: Alleviated; alleviating.