Full of liveliness and activity; characterized by quickness of motion or action.
Full of spirit of life; effervescing.
Stimulating or invigorating.
Abrupt, curt in one's manner or in relation to others.
To make or become lively; to enliven; to animate.
Greater than the speed of sound (in the same medium, and at the same temperature and pressure).
Ultrasonic, having a frequency too high to be audible.
An aircraft that can travel at the speed of sound.