time suck

or time-suck or time·suck

[ tahym-suhk ]
/ ˈtaɪmˌsʌk /

noun Informal.

something that takes up too much of one's time: Social media is addictive and a huge time suck when I should be studying.

Origin of time suck

First recorded in 1980–85

Example sentences from the Web for time suck