pĕr-argūtus, a, um, adj.
I Very shrill (Appuleian): tintinnabula, Ap. Met. 10, 18, 22; carmen, id. Flor. p. 349.—
II Very acute , very witty : homo, Cic. Brut. 45, 167.
per-argūtus adj., very acute, very shrewd: homo. ...
An Elementary Latin Dictionary