IPA: /ˈbɪziˌwɜːrk/
KK: /ˈbɪziˌwɜrk/
Tasks or activities that keep someone busy but do not produce meaningful results or progress.
He spent the afternoon doing busywork instead of focusing on his main project.
Busywork is formed from "busy" (from Old English "bysig", meaning occupied or active) and "work" (from Old English "weorc", meaning labor or effort). The term refers to tasks that keep one occupied but do not contribute significantly to productivity or meaningful outcomes.
Think of being 'occupied' ('busy') with 'labor' ('work') that doesn't really achieve much — that's what busywork means.