The antonyms for the word "most doublechecked" include terms such as unchecked, informal, haphazard, unverified, and dubious. These terms imply a lack of attention to detail or an absence of thorough checking. An unchecked document or procedure, for instance, might contain errors or inconsistencies that could lead to serious consequences if left unaddressed. In contrast, an informal or haphazard approach to quality control might lack the rigour needed to spot potential issues. Similarly, unverified or dubious sources of information may not be reliable or trustworthy, making them less useful for making informed decisions. Ultimately, the antonyms for "most doublechecked" all describe circumstances in which human error or the absence of reliable checks and balances can pose risks to productivity, safety, or credibility.