The word "secondrater" is a derogatory term used to describe someone who is perceived as inferior or mediocre in comparison to others. However, there are many synonyms that can be used to describe this type of person. For example, the words "inferior," "substandard," and "average" all convey a similar meaning to "secondrater." Other synonyms include "mediocre," "inferior," "poor," and "second-class." Additionally, words like "nonentity" and "nobody" can also be used to describe someone who is considered to be a "secondrater." In essence, there are many different ways to describe someone who falls short of expectations or standards, and it all depends on the context and level of severity.