The term 'deeply felt' can be described by the crossword solutions of VISCERAL (8 letters), INTENSE (7 letters), ACUTE (5 letters), INNER (5 letters), EARNEST (7 letters), and SENSUOUS (8 letters). VISCERAL refers to something that is felt in the innermost part of one's being, while INTENSE implies a strong emotion or feeling. ACUTE suggests a sharpness or intensity, while INNER implies something that is hidden or not easily seen. EARNEST indicates a sincere and serious attitude, and SENSUOUS implies a physical or emotional pleasure. Together, these words describe a feeling that is INTENSE, sharp, hidden, sincere, and pleasurable, all at the same time.