Indistinguishable refers to something that cannot be differentiated or distinguished from something else. Its antonyms include distinguishable, differentiable, recognizable, discernible, distinct, and clear. Distinguishable suggests that the item in question can be clearly separated or identified from another. Differentiable implies that the properties of the objects being compared are easily recognizable or can be distinguished by subtle differences. Recognizable refers to the ability to identify something based on its known features or characteristics. Discernible suggests that something is distinguishable by its perceptible attributes that allow one to differentiate it from another. Distinct means something that is recognized as separate or different from others, and clear implies clarity and unambiguousness.