richShe's one of the richest women in the country.
wealthyOliver's parents are very wealthy.
well offAfter years of working hard, we are now quite well off.
loadedinformalThey don't have any money worries - they're loaded.
flushinformalHe's flush with cash.
better offWe're a lot better off now that Jane's working.
affluentIt's a very affluent neighbourhood.
prosperousIn a prosperous country like this, no one should go hungry.
born with a silver spoon in your mouthHe was born with a silver spoon in his mouth and has never worked a day in his life.
stinking richHe won the lottery and now he's stinking rich.
rolling in itThey're absolutely rolling in it - they just bought a third house!
in the lap of luxuryShe lives in the lap of luxury in her Beverly Hills mansion.
live like a king/lordHe lives like a king, eating lobster twice a week and drinking champagne every night.
live high on/off the hogUSinformaloftendisapprovingEver since she got her fancy new job, she's been living high on the hog.