adverb taking the 'to' particle, adverb, noun or participle which takes 'suru'
Describes doing something with little effort, weight, or seriousness; can imply a lack of proper care. Often used adverbially with と or as a する-verb.
彼は重い荷物を軽々と持ち上げた。
He lifted the heavy luggage lightly.
そんな大事なことを軽々しく話してはいけない。
You mustn't speak carelessly about such an important matter.