trenchant \TREN-chunt\, adjective:
1. Characterized by or full of force and vigor; as, "a trenchant analysis."
2. Caustic; biting; severe; as, "trenchant criticism."
3. Distinct; clear-cut; clearly or sharply defined.
Her insistence that women's rights should be upheld universally, notwithstanding concerns about cultural diversity, led some to criticise her for being too narrowly entrenched within western liberalism, while others celebrated her trenchant defence of egalitarianism.
-- Judith Squires, "Susan Moller Okin", The Guardian, March 26, 2004