An antagonistic contrivance or artifice.

Also said of things in motion or involving motion, as cross-current (also figurative and attributive), cross-ice, cross-traffic, cross-train; cross…

An opposing force; a direct resistance or check.

An impersonal agent acting in opposition; an opposing force.

With pl. concord. Perh.: opposing forces.

Attraction of a contrary tendency; an attraction counteracting the influence of another.

A force acting in opposition to another; contrary, opposing, or resisting force.

An opposing force or principle; one side in a relationship of opposition or hostility.

figurative.