tren ch@nt
adjective
1. incisive or penetrating, as perception or wit.
This keenly perceptive remark, both sharp and full of truth, is just one example of the writer’s trenchant wit.
2.vigorous and effective, as an argument or policy.
“Professor Mearsheimer presents a trenchant argument that the United States is unlikely to underwrite with its blood and treasure those European wars in which Europe’s own blood and treasure are equal to the task.” (The Future of the American Military Presence in Europe, p. 129))
3. well-defined; clear-cut.
a trenchant outline