The phrase "declares null and void" refers to an action that cancels or invalidates something. Antonyms for this phrase could include "authorizes," "approves," "validates," "enforces," or "upholds." These words imply a positive action that affirms or confirms the validity or importance of something. For example, a court might authorize a contract or uphold a decision, rather than declaring it null and void. The choice of words used in legal language can have a significant impact on the meaning and outcome of a case, so it is important to carefully consider the antonyms and synonyms of key terms.