KanjiJLPT N2
Lightly

lightly, trifling, unimportant

Mnemonic

A car anointed with sacred oils glides so lightly it barely touches the road—it floats as if the divine blessing removed all its weight. The sacred energy makes the car drift lightly through traffic like a feather on a breeze.
Additional thoughts
Visualize a glowing, weightless car hovering just above the asphalt, blessed by sacred light. The holier it becomes, the lighter it gets—gravity simply gives up.
Quick recall
A sacred car floats lightly above the road, weightless from divine blessing.

Details

The keyword for 軽 is lightly. This kanji conveys the concept of lightness in weight, as opposed to heaviness, and by extension it describes things that are slight, minor, or not serious in degree. It can refer to physical lightness, such as a light object, or metaphorical lightness, such as a light punishment or a casual, carefree attitude. It also carries connotations of ease, nimbleness, and lack of burden.
On'yomi
けい、きょう、きん
Kun'yomi
かる.い、かろ.やか、かろ.んじる