From Longman Dictionary of Contemporary Englishplay fast and loose with somethingplay fast and loose with somethingto not be careful about what you do, especially by not obeying the law or a rule They played fast and loose with investors’ money. → play
Examples from the Corpus
play fast and loose with something• They probably see it as a place where government plays fast and loose with tax dollars.• And there is his willingness to play fast and loose with the facts.• Besides, it is playing fast and loose with the statistics to take 1981 as the baseline for the Government's claims.• To say that the Wattersons had played fast and loose with their investors' capital was an understatement.• In what follows, I shall play fast and loose with these words and the subtle distinctions between them. 