E pluribus umum is a Latin phrase that translates to "out of many, one", and the phrase is on The Seal of the United States, and on the back of some coins. The meaning behind it is that out of many states, there emerged one nation.
Sullen means gloomy or in a bad mood. However, cheerful is the opposite (or an antonym) becuase it is an adjective that means to be happy and in a good mood.
