Which term is synonymous with 'wordiness' or 'inflation in language'?

The term that is synonymous with 'wordiness' or 'inflation in language' is verbiage. This word refers to the excessive use of words, particularly in a way that is unnecessary or redundant. In contexts where clear and concise communication is valued, verbiage can detract from the message, making it convoluted and difficult for the audience to grasp the intended meaning.

In contrast, the other terms do not relate to the idea of wordiness. Xerography pertains to copying processes, vilify involves speaking about someone in a derogatory manner, and surveillance refers to the act of monitoring or observing. Therefore, verbiage is the appropriate term to describe language that is excessively wordy, as it captures the essence of inflated speech that obscures clarity.