身軽

みがる

agile; nimble; light (of foot); casual (clothing)

common word Also written 身がる

Meaning

adj-na
agile; nimble; light (of foot)
adj-na
casual (clothing); light (e.g. luggage)
adj-na
carefree; with limited responsibility

Example sentences

捕らえることのできないもの、身軽で素早いもののたとえ、だそうです。

It's apparently a metaphor for something uncatchable, light of body and fleet of foot.