Counter-plot refers to a secret plan aimed at foiling an existing scheme or plot. It can be challenging to find an antonym for this word, as it has a specific definition. However, one possible antonym could be the word cooperation. Cooperation entails working together towards a common goal and implies no subterfuge or hidden motives. Additionally, another antonym for counter-plot could be transparency. Transparency relates to open and clear communication and honesty, which can help prevent the need for counter-plots. Ultimately, counter-plotting implies distrust and deceit, whereas cooperation and transparency foster positive relationships and collaboration.