motionless
adj. B2 Upper Intermediate US //ˈmoʊʃənɫəs// UK //mˈəʊʃənləs// mo·tion·less
adj. not moving at all. You use this to describe something that is perfectly still or quiet.
adj. not moving or showing any sign of movement. Often used to describe a state of physical stillness or a lack of activity.
The cat sat motionless on the windowsill.
The statue stood motionless in the center of the garden, watching the children play.
The lake was so motionless that the reflection of the clouds seemed to be painted directly onto the surface of the water.
From motion + -less.