Mellowingly is an adverb that describes something that happens in a gentle, calming manner, creating a relaxed atmosphere. Some synonyms for mellowingly could include soothingly, mellifluously, tranquilly, peacefully, and serenely. These words suggest a sense of softness and smoothness, highlighting the gentleness of the action being described. Other synonyms for mellowingly might include tenderly, kindly, gently, and lovingly, which carry a sense of compassion and care. Ultimately, the use of synonyms for mellowingly can help to provide a more nuanced and varied description, and can evoke different emotions and sensations in the reader or listener.