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

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n. Equality in distribution, as of weight, relationship, or emotional forces; equilibrium.

n. A counterpoise; a counterbalance.

n. A state of balance; equilibrium.

n. A counterbalance.

v. To act or make to act as an equipoise.

v. To cause to be or stay in equipoise.

n. Equality of weight or force; hence, equilibrium; a state in which the two ends or sides of a thing are balanced, and hence equal; state of being equally balanced; -- said of moral, political, or social interests or forces.

n. Counterpoise.

n. An equal distribution of weight; equality of weight or force; just balance; a state in which the two ends or sides of a thing are balanced or kept in equilibrium: as, hold the scales in equipoise.

n. A balancing weight or force; a counterpoise.

To bring into a state of equipoise or balance; hold in equipoise.

To counterbalance.

n. equality of distribution

"I used to believe in having a good time, and all that sort of nonsense; but I've come to see that what he calls equipoise is the true road to happiness, and that it's best to leave off"

equipoised    equipoising   

structure    construction   

proportion    symmetry    conformation   

counterpoise    balance    equality   

self-mastery    poise    equilibrium    coördination    collectedness    imperturbability    calmness    oneness    steadiness    self-assurance