When we feel empathy with someone's sad feelings, we want to express our deepest condolences and support. Here are some synonyms for the phrase "express profound sympathy": 1. Extend heartfelt condolences - Let them know that you care and are there for them. 2. Offer sincere condolences - Show your genuine concern and sympathy. 3. Express deepest sympathies - Share your deepest condolences and thoughts. 4. Send condolences - Reach out to the individual or family with a heartfelt message. 5. Show compassion - Let them know that you share their pain and care for them. 6. Convey your support - Show that you are there to support them through this difficult time. 7. Share in their grief - Let them know that they're not alone in their sadness.