Datums refer to a set of reference points or values. Antonyms for datums could include terms like ambiguity, uncertainty, and indefiniteness. Words like unanticipated, haphazard, and unexpected can also effectively convey the opposite meaning of datums. These words suggest that there may be lack of a standard reference point or that information is not properly organised. The antonyms for datums can help emphasise the importance of avoiding confusion and providing clear and consistent guidelines for decision-making or measurement. Antonyms can also encourage individuals to be more proactive in planning and organising their work to ensure a reliable outcome.