to have no money at all; completely broke; entirely without funds; penniless
I can’t even pay the rent this month. I’m flat broke.
Sorry, I’m flat broke. Not a cent on me.
We were flat broke at the time.
I can’t help you – I’m flat broke
You may be flat broke, but you will find a way to pay your electricity bill or you will live in the dark.
I’m flat broke. [ = I have no money]
Within six months he was flat broke and on the verge of being disbarred.
I can’t afford to go on holiday this year – I’m (flat) broke.