Unserviceable means something that cannot be used or repaired. Antonyms for this term would be functional, usable, repairable, serviceable or operational. These terms signify that the object in question is not only available for use, but also in working condition. When something is serviceable, it means that it is capable of working as intended and fulfilling its purpose. In contrast, unserviceable refers to items that are in disrepair, broken, or no longer functioning as they should. Thus, finding antonyms for the term more unserviceable can help us express the opposite meaning of this term, that is, things that are useful and working properly.