The antonyms for the phrase "become distended" are words that represent the opposite of the action of becoming swollen or bloated. These antonyms include words such as contract, shrink, deflate, diminish, and reduce.
Contract refers to the reduction in size or extent, while shrink means to decrease in volume, size, or occurrence. Deflate refers to releasing air or gas, thus decreasing in size, and diminish means to become less substantial. Reduce refers to decreasing in amount, size, or intensity.
These antonyms signify the opposite of becoming bloated, which can happen due to various reasons such as health issues or overeating. Thus, using these words can help emphasize the opposite action and convey the intended meaning effectively.