Definify.com

Webster 1913 Edition

Noun.

The quality or state of being passive; unresisting submission.

To be an effect implies

passiveness

, or the being subject to the power and action of its cause.

J. Edwards.

Noun.

Quality of receiving impressions from external agents or causes; as the passiveness of matter.

Passibility; capacity of suffering.

We shall lose our passiveness with our being.

Patience; calmness; unresisting submission.

passiveness ‎(usually uncountable, plural passivenesses)

passivity — see passivity