Formal:
* Concise: Short and to the point.
* Summarized: Presented in a shorter, more condensed form.
* Truncated: Shortened by cutting off part of it.
* Curtailed: Reduced in length or extent.
* Condensing: Making something shorter and more compact.
Informal:
* Shortened: Made shorter.
* Cut down: Reduced in size or extent.
* Streamlined: Made more efficient by removing unnecessary parts.
* Brief: Short in duration or extent.
* Shorter: Less in duration or extent.
The best synonym for "abbreviated" will depend on the context and the specific meaning you want to convey.