Antonyms for the word "most pocket size" would include terms such as bulky, large, cumbersome, unwieldy, and oversized. These words indicate the opposite of compactness and portability, which are the defining features of a pocket-sized object. Objects that are bulky, large, or unwieldy may require specialized storage or transportation solutions that limit their mobility and convenience. Conversely, pocket-sized objects offer greater flexibility and accessibility, making them ideal for people on the go who need to carry essentials with them at all times. By understanding the antonyms of pocket-sized, we can better appreciate the importance of small, portable objects in our daily lives.