adj. Chiefly British
Very tired; exhausted.
knackered [ˈnækəd] Brit Slang
1. exhausted; tired out
2. worn out; no longer working, esp after long or hard use
The result of a night out with the girls, starting off with an Ann Summers house party, hitting the pubs, going back to someone else's house for an after pub party and ending with me changing, feeding then cuddling a very cute 9 day old baby for hours.