keenwitted

So weak a man as Penn, wishing to find Jacobites every where, and prone to believe whatever he wished, might easily put an erroneous construction on invectives such as the haughty and irritable Devonshire was but too ready to utter, and on sarcasms such as, in moments of spleen, dropped but too easily from the lips of the keenwitted Dorset.

The History of England, from the Accession of James II — Volume 4 Thomas Babington Macaulay Macaulay 1829