N5 - 軽いかるい
Light (in weight)
N1 - 気軽きがる
cheerful, buoyant, lighthearted
N1 - 軽快けいかい
rhythmical (e.g. melody), casual (e.g. dress), light, nimble
N1 - 軽率けいそつ
rash, thoughtless, careless, hasty
N1 - 軽蔑けいべつ
scorn, disdain
N1 - 手軽てがる
easy, simple, informal, offhand, cheap