Sundry item refers to a miscellaneous or diverse collection of items, but when we consider its antonyms, we focus on specific, well-defined items. The opposite of sundry item can be a specific item, distinct item, unique item, or even a particular item. These antonyms imply that the item in question is not part of a broad miscellaneous category, but rather something with a specific identity or purpose. For instance, a specific item could be a specific tool, equipment, or product. In contrast, sundry item implies a mix of things that are not related to each other in a significant way. Therefore, knowing the antonyms of sundry item can help one to communicate more specifically about different objects.