Englishfagged
adjective
I'm off to bed now—I'm absolutely fagged out:
exhausted, tired, tired out, worn out, fatigued, weary, wearied, drained, sapped, spent, washed out, on one's last legs;
informal done in, all in, dog tired, dead beat, dead on one's feet, fit to drop, shattered, bushed, frazzled, worn to a frazzle;
British, informal knackered;
North American, informal tuckered, pooped.
fagged Oxford Dictionary of English