Pithily
/ˈpɪθɪli/
Definition 1 of 1
Pro Tip 1/3Direct Expression
Use 'pithily' when the speaker cuts unnecessary words and gets to the point quickly. 
In the meeting, he pithily stated the solution to the problem.
Pro Tip 2/3Strong Impact
'Pithily' often gives a sense of strong opinion or decisive statement. 
The critic pithily dismissed the film's plot as cliché.
Pro Tip 3/3Not Rude
Being pithy isn't rude, but concise. It's valued for efficiency, not rudeness. 
Her pithily worded email saved everyone's time.