This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. By, toward, or of aggregation; aggregational.

adj. Taken together; collective.

adj. Gregarious; social.

adj. tending to gather into a mass.

Pertaining to aggregation; taken together; collective.

Tending to aggregate; gregarious; social.

In social.: Tending toward a center of density, as concentration of population.

Tending to combine small groups into large organizations, as hordes into tribes or small corporations into great corporations and ‘trusts.’

adj. formed of separate units gathered into a mass or whole

"The differences are enacted into differences between the traditions of what we will call aggregative political processes, on the one hand, and integrative political processes, on the other."

collective   

aggressive resemblance    aggressive coloring    aggressive character   

collective    gregarious    social