adverb
casually; without any particular reason; nonchalantly
Used when someone does something in a casual, offhand manner, often without a specific purpose or deep thought. Implies a lack of formality or deliberation.
彼は何か無しに部屋に入ってきた。
He casually walked into the room.
何か無しにそんなことを言わないで。
Don't say things like that so casually.