- An impulsive quality - Casualness - The quality or state of being spontaneous, or acting
from native feeling, proneness, or temperament, without constraint or
external force. - The tendency to undergo change, characteristic of both
animal and vegetable organisms, and not restrained or cheked by the
environment. - The tendency to activity of muscular tissue, including
the voluntary muscles, when in a state of healthful vigor and
refreshment.