When referring to antonyms for the phrase "act place of", there are a few different options depending on the context. One potential antonym could be to "neglect" or "ignore" the responsibility of acting in a particular place or position. In some cases, the opposite of acting in a certain place may be to simply "leave" or "vacate" that position, rather than actively taking a contrary action. Additionally, if the connotation of the phrase suggests an intentional or purposeful action, antonyms could include terms like "random," "inadvertent," or "unplanned." Overall, the exact antonym for the phrase will vary depending on the specific situation in which it is used.