不懂, 一无所知

have not a stiver have not a dry thread on have not a dry thread on one have not a leg to stand on have not a dry stitch on not have a word to throw at a dog have-not clue not have a penny to bless oneself with have not been to not worth a farthing have not a stiver not have a dog's chance have not a dry thread on one have not a leg to stand on not have a word to throw at a dog have-not follow up a clue provide a clue to not to have a feather to fly with intricate case without a clue have not been to