SAGACITY Copy link • SAGACITYsagacitas (power of tracing things to their causes; by metonymy, from hounds): ingenii acumen or acies (the former implying more of depth; of original and inventive ability), and acumen only: perspicacitas: prudentia perspicax (insight, taking in all at one glance): subtilitas (fine discrimination). To possess natural sagacity, natura acutum esse: such is his own sagacity, qua est ipse sagacitate.