The term "tongue flame" is often associated with intense and passionate expressions of emotion or desire. Some synonyms for this phrase include ardor, fervor, passion, intensity, and zeal. Other words that could be used to describe this type of fiery language might include fervent, enthusiastic, or even rapturous. Whether used to describe love, anger, or some other powerful feeling, these synonyms all convey a sense of deep and powerful emotion that is expressed with a forceful and often poetic language. Whatever the context, the use of such intense language can add powerful rhetorical impact to any written or spoken communication.