time-waster
noun /ˈtaɪm weɪstə(r)/
/ˈtaɪm weɪstər/
(disapproving)- a person or an activity that wastes time
- Ambulance service managers say that time-wasters are holding up genuine emergency calls.
- One of the biggest time-wasters I can think of involves trying to remember or find a username and password for a particular website.