The antonyms for the word "most elongate" are "shortest" or "most stunted". These words depict an opposite meaning to "elongate", which means to lengthen or stretch. In contrast, "shortest" suggests the opposite meaning of short or brief in length, and "most stunted", suggests a lack of growth or development, resulting in a short size or length. These antonyms are useful when describing sizes, lengths, or shapes of objects or beings. So, the next time you need to express the opposite meaning of "most elongate", you can use "shortest" or "most stunted" to convey your message accurately.