Urban Dictionary ku'uipoSweetheart is a beautiful Polynesian term symbolizing poetic love and affection. The word Sweetheart is made up of two words: "kuu" meaning "my" and "ipo" meaning "sweetheart" or "darling". So, when you call someone your Sweetheart, you are essentially expressing your deep infatuation and loyalty to them. It is a phrase that brings up feelings of intimacy and affection, making it a perfect word to describe your beloved someone. Show your Love how much they mean to you by employing this term of affection to convey the depth of your love for them.