Unfeigning is an adjective that means sincere, genuine, or heartfelt. There are several synonyms that can be used in place of unfeigning, such as authentic, honest, true, and real. Other options include heartfelt, candid, open, and frank. Each of these words conveys a sense of honesty and genuineness, making them an excellent choice when describing someone's behavior or emotions. Whether you are writing a letter, giving a speech, or engaging in a conversation, these synonyms for unfeigning will help you communicate your feelings with clarity and honesty. Always remember to choose the right word that truly represents your thoughts and feelings.