noun
killing time; passing time
Neutral or slightly positive: doing something to fill spare time, similar to 暇つぶし.
See also: 暇つぶし
待ち時間にスマホで時間つぶしをした。
I killed time on my phone while waiting.
長い
I brought several books to pass the time on the long flight.
noun
wasting time; waste of time
Negative nuance: spending time unproductively or on something pointless. Often used in phrases like 時間つぶしにしかならない.
その会議は完全な時間つぶしだった。
That meeting was a complete waste of time.
ゲームばかりしていては時間つぶしにしかならない。
Just playing games all day is nothing but a waste of time.