The word "curmur" does not exist in any language, therefore, there are no synonyms available. However, if you meant to type "murmur", then some synonyms for it could include whisper, mumble, mutter, grumble, and murmurings. All of these words describe a low, indistinct, or soft sound or voice that is difficult to hear or understand. These words are often used in discussions about communication and can describe both positive and negative emotions, such as soft and soothing murmurs or grumbling murmurs of discontent. Whatever the context, these synonyms for murmurs can add depth and clarity to writing and speech.