c. 1300, agreven, "to disturb, trouble, attack," from Old French agrever "make worse, make more severe" (Modern French aggraver), from Latin aggravare "make heavier; make worse or more oppressive," from ad "to" (see ad-) + gravare "weigh down," from gravis "heavy" (from PIE root *gwere- (1) "heavy"). The spelling was corrected to agg- in French 14c., In English 15c. Related: Aggrieved; aggrieving.
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