Definable: Antonyms for the word "in-definable" are those that signify the ability to define or describe something. These antonyms may include words like explicit, clear, tangible, observable, distinct, or certain. Other antonyms for the word could be particular, identifiable, categorical, or describable. These antonyms highlight the ability to put a name or category to something, as opposed to struggling to do so. In contrast to in-definable, these antonyms suggest that something can be understood or grasped with relative ease. When we use antonyms for in-definable, we try to highlight that the object in question has characteristics that make it easier to understand, conceptualize or categorize.