御三時[osanji] three-o'clock snack
三鞭酒[shanpen] champagne
球面三角法[kyuumensankakuhou] spherical trigonometry
胸三寸[munesanzun] heart
元三[ganzan] New Year's period (January 1st to 3rd)

五十三次[gojuusantsugi] the 53 Toukaidou stages
向こう三軒[mukousangen] one's next three neighbors
降三世明王[gouzanzemyouou] Trailokyavijaya Vidya-raja
再三[saisan] again and again
再三再四[saisansaishi] repeatedly

お徳[otoku] economical
悪徳[akutoku] vice
悪徳新聞[akutokushinbun] irresponsible newspaper
偉徳[itoku] outstanding virtue
威徳[itoku] virtue and influence

遺徳[itoku] benefit from ancestors' virtue
一徳[ittoku] virtue
陰徳[intoku] secret charity
乾徳[kentoku] emperor's virtue
謙譲の美徳[kenjounobitoku] modest virtue