sprightliness

This term describes a lighthearted, energetic quality that blends physical agility with a cheerful disposition. It suggests a youthful or nimble spirit, often evoking an image of quick movements and an infectious, upbeat mood. It is more specific than general energy, as it implies a certain grace or playfulness.

As an abstract quality, this noun is uncountable. It cannot be pluralized or counted as individual units; instead, it is measured in degrees of intensity. To quantify it, one must use partitive constructions such as a touch of sprightliness or a great deal of sprightliness.