Spine-chilling means something that causes fear, dread or horror. The opposite of spine-chilling can be described with antonyms like comforting, pleasing, delightful, or soothing. One might think of warm fireplaces, cozy blankets or relaxing massages. Other antonyms might include banal, ordinary or mundane, which might describe a situation that lacks excitement or intensity. Conversely, warm or joyful moments might be considered uplifting, calming or rejuvenating, countering the spine-chilling feeling that might cause fear or anxiety. Ultimately, antonyms for "most spine-chilling" are best described as anything that makes one feel safe, secure and at peace.