Which word best describes a cheerful and friendly demeanor?

The term 'jovial' perfectly encapsulates a cheerful and friendly demeanor. It is derived from the Latin word 'Jovialis', which means "of Jupiter," who was considered the god of joy and good fortune. A jovial demeanor suggests a person who is full of high spirits, good humor, and a disposition that spreads positivity and warmth to others. This aligns directly with the notion of being both cheerful and friendly, characterizing individuals who tend to have a lighthearted attitude and approach social interactions with enthusiasm.

In contrast, the other words do not convey a cheerful and friendly demeanor. 'Gloomy' suggests a state of darkness or depression; 'solemn' denotes seriousness or a lack of humor, often associated with formal or grave situations; 'melancholy' refers to a deep sadness or reflective sorrow. Each of these alternatives emphasizes negative or subdued emotional states, making them unsuitable when describing someone with a cheerful and friendly disposition.