The phrase "were the up and up" implies that something is honest, legitimate or aboveboard. Thus, antonyms of this phrase include words such as dishonest, deceitful, fraudulent, corrupt, shady, illegitimate, and unethical. These words pertain to situations, behaviors or practices that are deemed to be improper, illegal or immoral. For instance, a business that is involved in fraudulent activities, a politician who engages in corrupt practices, or an individual who consistently tells lies could be described as being in contrast to "were the up and up". Conversely, those who are honest, trustworthy, and genuine in their dealings could be described as being in line with this phrase.