General:
* Combined
* Consolidated
* Collected
* Compiled
* Assembled
* Summarized
* Totaled
* Grouped
* Lumped
* Accumulated
More specific:
* For data: Averaged, collated, tabulated, tabulated, synthesized
* For groups or individuals: United, integrated, unified
Example:
Instead of saying "The company aggregated its sales data," you could say:
* "The company combined its sales data."
* "The company consolidated its sales data."
* "The company compiled its sales data."
The best synonym will depend on the specific meaning you want to convey.