One of the antonyms for the word "in-decencies" is "decency." Decency refers to the quality of being reasonable, courteous, and appropriate. Another antonym for "in-decencies" is "honorableness." This term means having an esteemed character that entails virtues such as honesty and humility. Another antonym is "propriety," meaning following the norms or the established standards of decency. The word "morality" is also an antonym of "in-decencies," referring to the principles of right and wrong behavior in the society. Finally, the term "respectability" is also an antonym, referring to the quality of being respectable, honorable, and reputable.