Example : The fag end of this crisis-ridden century.
The tail of the storm.

Synonyms : fag end, tail

Synonyms : tail

Example : He deserves a good kick in the butt.
Are you going to sit on your fanny and do nothing?.

Synonyms : arse, ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tooshie, tush