The phrase "hath dibs something" is not commonly used in modern English. However, if we were to consider "dibs" as a synonym for "claim" or "ownership," some potential antonyms for "hath dibs" could include "lacks ownership," "has no claim," "denied access," or "forfeited rights." These antonyms suggest a lack of control or authority over something that has been claimed by someone else. Alternatively, we could consider "hath dibs" to mean "has a preference for," in which case antonyms might include "avoids," "dislikes," or "is indifferent to." Ultimately, the meaning of "hath dibs" is ambiguous, making it difficult to identify a definitive set of antonyms.