allege

Middle English alleggen to submit in evidence or as justification, adduce, from Anglo-French aleger, allegger, probably in part modification of Medieval Latin allegare, from Latin, to send as a representative, adduce in support of a plea (from ad- + legare to depute), in part from Anglo-French aleger to lighten, free, exculpate, from Late Latin alleviare to relieve — more at legate, alleviate