The phrase "with lust in heart" is often used to describe a person who is driven by strong physical desires and a heightened sense of passion. While it's a powerful phrase that can evoke strong emotions, there are many other ways to convey the same message in other words. Some synonyms for "with lust in heart" include "consumed with desire," "driven by passion," "overwhelmed with longing," "captivated by ardor," and "enchanted by desire." All these phrases capture the intensity and single-mindedness of someone who is deeply and passionately attracted to someone or something, but each brings with it a slightly different connotation that can add nuance to your writing or speech.