What is the 1920 slang word for back talk?

There wasn't one specific slang word for "back talk" in the 1920s. The language of the era was more focused on describing the act itself or the person giving the back talk, rather than having a single word for it. Here are some possibilities:

* "Sass" was already in use, though it might have been considered slightly more polite than "back talk."

* "Lip" - "Giving someone lip" was a common way to describe talking back.

* "Freshness" - To be "fresh" meant to be disrespectful or impertinent.

* "Wisecracking" - This term referred to making smart or witty remarks, which could be considered back talk depending on the context.

* "Cheeky" - This word, similar to "fresh", described someone being audacious or disrespectful.

Ultimately, the best way to understand the 1920s slang for back talk is to consider the context and the specific phrase used. It's likely that people would have used a combination of these words and phrases to describe the act of talking back.