adverb taking the 'to' particle
idly; sluggishly; lazing around
Describes spending time in a relaxed, unproductive manner, often with a nuance of laziness or lack of urgency. Frequently used with 過ごす or する.
休日はのんべんだらりと過ごすのが好きだ。
I like to spend my days off just lazing around.
彼は一日
He idly watched TV all day long.