| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Knave | 5 | 3 | 2 | 1 |
| Knock | 5 | 4 | 1 | 1 |
| Knock Out | 9 | 6 | 3 | 2 |
| Knucklehead | 11 | 7 | 4 | 3 |
| Lad | 3 | 2 | 1 | 1 |
| Laddie | 6 | 3 | 3 | 2 |
| Lag | 3 | 2 | 1 | 1 |
| Lallygag | 8 | 6 | 2 | 3 |
| Lame | 4 | 2 | 2 | 1 |
| Laying Waste | 12 | 8 | 4 | 2 |
| Leave | 5 | 2 | 3 | 1 |
| Leave Taking | 12 | 7 | 5 | 4 |
| Lemon | 5 | 3 | 2 | 2 |
| Linger | 6 | 4 | 2 | 2 |
| Little Devil | 12 | 8 | 4 | 4 |
| Little Monkey | 13 | 9 | 4 | 4 |
| Little Rascal | 13 | 9 | 4 | 4 |
| Loaf | 4 | 2 | 2 | 1 |
| Loggerhead | 10 | 6 | 4 | 3 |
| Loiter | 6 | 3 | 3 | 2 |
| Lollygag | 8 | 6 | 2 | 3 |
| Lounge | 6 | 3 | 3 | 2 |
| Louse | 5 | 2 | 3 | 1 |
| Louse Up | 8 | 4 | 4 | 2 |
| Lowlife | 7 | 4 | 3 | 2 |
| Lozenge | 7 | 4 | 3 | 3 |
| Lunkhead | 8 | 5 | 3 | 2 |
| Lurk | 4 | 3 | 1 | 1 |
| Maim | 4 | 2 | 2 | 1 |
| Make Tracks | 11 | 8 | 3 | 3 |
| Man | 3 | 2 | 1 | 1 |
| Mark | 4 | 3 | 1 | 1 |
| Meanie | 6 | 2 | 4 | 2 |
| Meany | 5 | 3 | 2 | 2 |
| Merry Andrew | 12 | 9 | 3 | 3 |

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