The antonyms for the word "passed word" are numerous and varied, depending on the context in which it is used. Some common antonyms include "keep quiet," "keep silent," "withhold information," "keep mum," and "conceal." These antonyms suggest the opposite of sharing information with others, or transmitting a message from one person to another. Other antonyms include "ignore," "dismiss," "reject," "discard," or "discard as irrelevant." These antonyms suggest that the information in question is not valuable or significant and does not warrant any further attention or consideration. Overall, the antonyms for "passed word" reflect the range of ways in which information can be ignored, suppressed, or disregarded, rather than shared or discussed.