thirty-first
- s coming next after the thirtieth in position
- One typical passage hammers home a conclusion with: "In the thirty-first place .
- Last week, with his thirty-first book, Going Their Own Ways (Farrar Rinehart $2.
- The Ondine was not the newest; six submarines have been launched since the date of launching the boat in question, between the eighth of May 1925 and the thirty-first of August .