1530s, "to pile up, accumulate," from Latin exaggeratus, past participle of exaggerare "heighten, amplify, magnify," literally "to heap, pile, load, fill," from ex- "thoroughly" (see ex-) + aggerare "heap up, accumulate," figuratively "amplify, magnify," from agger (genitive aggeris) "heap," from aggerere "bring together, carry toward," from assimilated form of ad- "to, toward" (see ad-) + gerere "carry" (see gest). Sense of "overstate" first recorded in English 1560s. Related: Exaggerated; exaggerating.