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

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v. To compel, constrain, force.

adj. Forced, constrained, done under compulsion.

v. To work together.

v. To force; to compel; to drive.

verb-intransitive. To act together; to work in concert; to unite.

To compel; force.

To act together.

v. act together, as of organisms

"Cousin german to idleness, and a concomitant cause, which goes hand in hand with it, is [1558] nimia solitudo, too much solitariness, by the testimony of all physicians, cause and symptom both; but as it is here put for a cause, it is either coact, enforced, or else voluntary."

act    move   

force    compel    drive    unite    cooperate