| NINETY | Number that is written XC in Roman numerals (6) |
| BOXCAR | Beast about ninety in American wagon (6) |
| RUSTIC | Word for "countrified", thus bumpkinly, crude, charmingly simple, homespun, peasanty or plain; or, made of rough branches, as in a fence for showjumping or XC (6) |
| DRRUTH | Sex expert who turned 90 in 2018 (2 wds.) |
| IDLEST | Round number that is least productive (6) |
| ELEVEN | Cardinal number that is the sum of ten and one (6) |
| SEPTET | The cardinal number that is the sum of six and one (6) |
| FIGURE | Fire about half the guns ___ a number, that is (6) |
| HEPTAD | A group of seven, or the cardinal number that is the sum of six and one (6) |
| OGDOAD | The cardinal number that is the sum of seven and one. |
| EXERCISEBOOK | How to Get Fit for Dummies is one that is written on in school (8,4) |
| IDEST | That is, written in Latin |
| OBIT | Love piece that is written in one of the paper's sections |
| LIE | False statement that is written by a number |
| ARTICLE | Thing that is written in the papers (7) |
| EXCELLING | Let's sing to Silvia, that she is 90, in Pisces (9) |
| CHINESE | Language that is written down |
| READ | Interpret something that is written or printed (4) |
| INANE | Silly, silly name that is written outside (5) |
| EXCUSEME | Ninety in Brussels seem unexpectedly sorry (6,2) |
