Unmistakably/ˌʌnmɪˈsteɪkəbli/ Definition 1 of 1Pro Tip 1/3Emphasis on Clarity Use 'unmistakably' when you want to stress how clear and obvious something is. His fingerprints were unmistakably visible on the glass. Pro Tip 2/3No Doubt 'Unmistakably' leaves no room for doubt or misinterpretation in what you're explaining. The test results were unmistakably positive. Pro Tip 3/3Perception Trigger Use it when something stands out so much that it triggers a strong recognition. The actor's style was unmistakably that of a 1920s movie star.