Yellowness/ˈjeləʊnəs/ Definition 1 of 2Pro Tip 1/3Visual Imagery Yellowness often evokes vibrant, sunny images in the reader's mind. Her dress had a yellowness like the morning sun. Pro Tip 2/3Cultural Associations In some cultures, yellowness represents happiness, wisdom, or wealth. The yellowness of the decorations celebrated the joyous festival. Pro Tip 3/3Negative Connotations Yellowness can also imply decay or disease, such as in leaves or teeth. The yellowness of the old book's pages showed its age.