The antonyms for the word "pre visioned" are unplanned, spontaneous, unanticipated, unexpected, impulsive, and unforeseen. When something is pre visioned, it means that it has been carefully thought out, planned, and anticipated beforehand. Conversely, when something is unplanned, it means that it happens haphazardly without any careful thought. Spontaneous refers to something that happens without any prior intention or planning, while unanticipated means that something was not expected or predicted. Unexpected is similar to unanticipated, only it emphasizes the element of surprise. Impulsive denotes an action that is done without any premeditation or reflection, and unforeseen refers to something that was impossible to predict or anticipate.