What Does ' Rainbow Kiss' Mean On TikTok The Viral Slang Term Multicolored arc Kiss Love: Signifying glee and variety, the rainbow kiss holds profounder significances. This enchanting fusion of colors and heartfelt gesture conveys love . Whether it symbolizes optimism, pride, or unity, the significance of the multihued embrace touches souls. Embrace the vibrancy and share the passion with a delightful colorful smooch.