Formal:
* Concise: This is the most common and formal option, emphasizing brevity and clarity.
* Succinct: Similar to concise, but with a slightly more literary tone, suggesting elegance in brevity.
* Terse: Implies a direct and to-the-point style, sometimes even bordering on bluntness.
Informal:
* To the point: This is a straightforward and easily understood phrase.
* Brief: Emphasizes shortness, but doesn't necessarily imply clarity.
* Sharp: This word suggests a quick and decisive style of communication.
The best word for you will depend on the context and the specific tone you want to convey.