| xvii | adj. The Roman number symbolizing the value seventeen. |
| xviii | adj. The Roman number symbolizing the value eighteen. |
| xxvii | adj. The Roman number representing twenty-seven. |
| xxviii | adj. The Roman number representing twenty-eight. |
| eighteen | (n) the cardinal number that is the sum of seventeen and one, Syn. 18, XVIII |
| eighteen | (adj) being one more than seventeen, Syn. 18, xviii |
| eighty-eight | (adj) being eight more than eighty, Syn. lxxxviii, 88 |
| eighty-seven | (adj) being seven more than eighty, Syn. lxxxvii, 87 |
| seventeen | (n) the cardinal number that is the sum of sixteen and one, Syn. XVII, 17 |
| seventeen | (adj) being one more than sixteen, Syn. 17, xvii |
| seventy-eight | (n) the cardinal number that is the sum of seventy and eight, Syn. LXXVIII, 78 |
| seventy-eight | (adj) being eight more than seventy, Syn. lxxviii, 78 |
| seventy-seven | (adj) being seven more than seventy, Syn. 77, lxxvii |
| sixty-eight | (adj) being eight more than sixty, Syn. lxviii, 68 |
| sixty-seven | (adj) being seven more than sixty, Syn. lxvii, 67 |
| thirty-eight | (adj) being eight more than thirty, Syn. xxxviii, 38 |
| thirty-seven | (adj) being seven more than thirty, Syn. 37, xxxvii |
| twenty-eight | (n) the cardinal number that is the sum of twenty-seven and one, Syn. 28, XXVIII |
| twenty-eight | (adj) being eight more than twenty, Syn. xxviii, 28 |
| twenty-seven | (n) the cardinal number that is the sum of twenty-six and one, Syn. 27, XXVII |
| twenty-seven | (adj) being seven more than twenty, Syn. xxvii, 27 |