BOTTOMLESS

[adjective] [not gradable] - without a limit or endThe generosity of the local people is bottomless.(figurative) Each day we ventured on to larger rocks from which we flung ourselves into the bottomless (= very deep) sea.The government's pockets are not bottomless (= It does not have unlimited amounts of money), so it has to find a way of reducing expenditure.We'll be pouring money into a bottomless pit (= spending an unlimited amount of money) if we try to keep that factory open.