n. The state or quality of being trenchant; sharpness; keenness; causticity.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. keenness and forcefulness of thought or expression or intellect
Word Usage
"Isabel saw them come with a good deal of assiduity to her auntÂ’s hotel, and judged them with a trenchancy which is doubtless to be accounted for by the temporary exaltation of her sense of human duty."