acuō uī, ūtus, ere 2 AC-, to sharpen, whet, point, make sharp: stridor serrae, cum acuitur: ferrum in me, V.: sagittas cote cruentā, H.

— Fig., of the tongue, to sharpen, exercise, practise: linguam causis, H.

— Of the intellect, to sharpen, quicken, arouse, discipline, improve: multa quae acuant mentem: illos sat aetas acuet, will make them keen, T.

—To stimulate, spur on, stir, arouse, incite, encourage, kindle: illum: ad crudelitatem te: alqm verbis, V.

—To increase, embitter, strengthen, exasperate: iram hosti, L.: stridoribus iras, V.