the negative aspect of something otherwise regarded as good or desirable. "he says being a rock star is a fun line of work when you're young, but admits fame can have its ________"
downside
a fault or failure to meet a certain standard, typically in a person's character, a plan, or a system. "he is so confident about his ________, it's hard to chastise him"
shortcomings
cheerful; optimistic. "he was ______ about the company's future"
upbeat