The phrase "smile up on" is not a commonly used word. However, it can be broken down into two distinct parts: "smile" and "up on." The pronunciation of "smile" is /smaɪl/, with the "ai" sound being a diphthong. "Up on" is pronounced as /ʌp ɒn/, with the "u" sound being pronounced as a short vowel. Together, "smile up on" can be pronounced as /smaɪl ʌp ɒn/. It is not a standard phrase, but is used poetically to describe the act of smiling.
"Smile up on" is a phrasal verb that can have different meanings depending on the context in which it is used. In general, it refers to the act of smiling or showing happiness or amusement, often unexpectedly or without reason.
One possible meaning of "smile up on" is that of a sudden or unexpected smile that appears on someone's face. This smile may emerge due to a pleasant thought or memory, an amusing situation, or simply a feeling of joy or contentment. It can also refer to a smile that appears without any apparent reason, as a result of genuine happiness or a positive outlook on life.
Additionally, "smile up on" can also be used to describe a situation where someone is smiling in a superior or condescending manner towards someone else. This can express an attitude of superiority, satisfaction, or amusement at another person's expense.
Overall, "smile up on" is a versatile phrase that captures the expression of happiness, contentment, or superiority through a smile. Its meaning may vary depending on the specific context and intentions of the person involved.