One pleasure in the rereading of Marx is to savor the trenchancy and aptness of his literary allusions.
From the theatlantic.com
The fabulous trenchancy and panache of the LSO in these short, sharp, shocks of slapstick was something to behold.
From the independent.co.uk
He was neither oracle, orator nor professional wit, but he expressed himself with trenchancy, and his gentlemanly self-control was occasionally ruffled by storms of anger.
From the en.wikipedia.org
Jonson is a figure of tremendous personal trenchancy and he also imposed his personality on his times, rising to collaborate with Inigo Jones on the great masques that enchanted the Stuart Court.
From the smh.com.au
More examples
Incisiveness: keenness and forcefulness of thought or expression or intellect