There are too many! Hebrew has sooo many - Simcha (unparalled joy) is the one I would have to choose, as I chose that word to name my youngest son! But runners-up are Ahavah (deep, abiding affectionate love), nishikah (the act of the angel of death stealing your breath with a kiss), and Tiferet (the concept of royalty/majesty/coronation) and so many more!
Someone else? I love to learn about languages!