Antonyms for the word "offloaded" could include words such as "loaded," "packed," or "stocked." These words indicate the opposite action of removing items from a particular location. If items are being loaded onto a vehicle or into a storage area, then they are being added rather than taken away, making these words appropriate antonyms for "offloaded." Additionally, terms such as "retained," "kept," and "maintained" can indicate that items have not been offloaded or removed but instead have been kept in their existing location. In essence, antonyms for "offloaded" are words that describe the presence or addition of items rather than their removal.