I see a lot of times when something is a politically-oriented scandal that the suffix ‑gate is added to the end of the word the scandal revolves around.
Examples include:
- Watergate
- Weinergate
- Valijagate (Spanish for “suitcase-gate”)
I believe that it originated during the Watergate scandal, but I don't know why the suffix ‑gate was perpetuated to other scandals. Is there a name for this literary mechanism of using part of previously popularized term to elicit a comparison or similar connotation?