Lewis & Short

dulcĭtūdo, ĭnis, f. [dulcis], sweetness (very rare).

  1. I. Lit.: gustatus, qui dulcitudine praeter ceteros sensus commovetur, Cic. de Or. 3, 25, 99.
  2. II. Trop., pleasantness, agreeableness, charm: usurarum, Dig. 42, 8, 10, § 10: CVM QVA VIXIT ANNIS XIII. CVM MAGNA DVLCITVDINE, in great tenderness (acc. to dulcis, II. B.), Inscr. Grut. 752, 3; so Inscr. Fabr. 250, 4.