| HOYLE | Edmond who wrote a treatise on the game of whist |
| CHAUCER | 14th century poet who also wrote "A Treatise on the Astrolabe" |
| LACROSSE | Sport based on the game of baggataway (8) |
| SLAM | The winning of every trick in a game of whist or bridge (4) |
| SOLO | Unaccompanied performance in a game of whist (4) |
| POPE | Edmond, who was convicted of espionage in Russia |
| HUME | Philosopher who wrote "A Treatise of Human Nature" |
| FLORA | The first name of the heroine in Cold Comfort Farm by Stella Gibbons; a treatise on botany; or, the Roman goddess of spring and blossoming plants (5) |
| TACTICUS | During the 4th century BCE, he wrote On the Defense of Fortifications, one chapter of which was devoted to cryptography, making it the earliest treatise on the subject. |
| MACHIAVELLI | Florentine statesman (1469-1527) who wrote The Prince, a treatise on government |
| DRIVE | A jaunt or journey in a motor vehicle; the act of chasing game or moving cattle; a gathering of whist players; or, a shot from a golf tee (5) |
| PROSTHESIS | Experts' treatise on the addition of a sound or syllable at the beginning of a word (10) |
| ANATOMY | Branch of morphology synonymous with dissection; a treatise on this; or, informally, the human body (7) |
| KEYNES | John Maynard, economist who authored A Treatise on Money (6) |
| ALMAGEST | Ptolemy's treatise on the motion of the stars and planets (8) |
| LAOTZU | "Treatise on the Response of the Tao" author, supposedly |
| JOHNMAYNARDKEYNES | 'A Treatise on Money' economist |
| POETICS | A treatise on aesthetics |
| GRUYTEREDDA | 13th-century work ascribed to Icelandic scholar Snorri Sturluson containing Norse myths and a treatise on poetry (7,4) |
| WITHDRAWS | Pulls out who's playing who in a version of whist (9) |
