The word "more super duper" is already an example of intensive or emphatic word, but if one needs to find its antonym, they may consider words that suggest the opposite of superlative quality. Words such as mediocre, average, ordinary, or standard may convey a sense of simplicity and normalcy rather than impressive or exceptional. Alternatively, words like lesser, inferior, or subpar may hint at a lower quality or level of achievement. While these words do not necessarily detract from the value of something, they are less likely to evoke the same level of excitement or admiration as 'super duper.