1. Joyful: Joyful is an adjective that means full of joy or happiness. It represents positive emotions and a cheerful attitude. This word starts with "J" and carries a great implication of being good. When someone is joyful, it shows that they have a positive outlook on life and can spread happiness to others. Despite the challenges one may face, being joyful can help maintain a sense of peace and contentment.

2. Jubilant: Jubilant is another word starting with "J" that carries a positive connotation. It describes a feeling of great happiness and triumph. This word implies a sense of overwhelming joy and celebration, often associated with significant achievements or happy events. When someone is jubilant, they are filled with an intense feeling of happiness, making it a word with good sentiments.

3. Jovial: Jovial is an adjective that means cheerful and friendly. It represents a person who is always in a good mood, spreading positivity and creating a lively atmosphere wherever they go. Jovial implies excellent social skills and the ability to bring people together. This word starting with "J" carries the connotation of being good because it signifies the presence of happiness and a friendly demeanor.

4. Juicy: Juicy is an adjective used to describe something that is moist, succulent, and flavorful. This word starting with "J" often refers to fruits or other food items that are especially ripe and flavorful. The implication of being good in the case of juicy lies in the idea that it enhances the taste experience and adds excitement to a meal. The juiciness of a dish can make it more enjoyable and satisfying.

5. Just: Just is an adjective that denotes fairness, righteousness, or something that is morally right. This word starting with "J" carries the implication of being good because it represents justice and the adherence to principles of fairness and morality. Being just means acting in accordance with what is right and treating others fairly and equitably.

Overall, words starting with "J" can have various meanings, but many of them carry positive connotations and imply goodness. From joyful and jubilant to jovial and just, these words reflect happiness, celebration, friendliness, and fairness. Additionally, words like juicy add a touch of enjoyment and satisfaction. The use of such words can bring positivity and brightness to conversations and written texts, enhancing the overall feel and impact of the language used.