What it means
To sack off something is to ditch it, cancel it, or stop bothering, usually because it feels like a faff or you’ve found a better shout. You can sack off plans, a job, the gym, even a whole person if they’re doing your head in. Often said as sack it off. Casual, cheeky, and a tiny bit ruthless.
Usage examples
"Let’s sack off this Teams call, say the Wi-Fi’s down, and nip to the caff for a bacon sarnie before anyone clocks."
"We sacked off the last lecture and went for a pint in the sun, no regrets, the slides are online anyway."
Where it comes from
It comes from sack in the sense of giving something the boot, the same sack as getting the sack from a job. To sack off a plan, a lecture or a chore is to dump it without ceremony. Very British, very casual, the verbal shrug of someone who has decided they simply cannot be bothered today.
Other ways to say it
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