Fi is a term often used to refer to the concept of "fidelity" or "faithfulness." In various contexts, it can describe loyalty in relationships, commitment to principles, or adherence to a set of beliefs. The idea of Fi emphasizes the importance of trust and reliability in personal and professional interactions. In the realm of personality typologies, particularly in the Myers-Briggs Type Indicator (MBTI), Fi represents "Introverted Feeling." This cognitive function focuses on internal values and emotions, guiding individuals in making decisions based on personal beliefs and ethical considerations. People with strong Fi often prioritize authenticity and personal integrity.