| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Erratic | 7 | 4 | 3 | 3 |
| Erring | 6 | 4 | 2 | 2 |
| Erroneous | 9 | 4 | 5 | 4 |
| Error Prone | 11 | 7 | 4 | 3 |
| Ersatz | 6 | 4 | 2 | 2 |
| Ethereal | 8 | 4 | 4 | 3 |
| Evident | 7 | 4 | 3 | 3 |
| Fabricated | 10 | 6 | 4 | 4 |
| Fabrication | 11 | 6 | 5 | 4 |
| Faithless | 9 | 6 | 3 | 2 |
| Fake | 4 | 2 | 2 | 1 |
| Faked | 5 | 3 | 2 | 1 |
| Faker | 5 | 3 | 2 | 2 |
| Fallacious | 10 | 5 | 5 | 3 |
| False | 5 | 3 | 2 | 2 |
| Falsehearted | 12 | 7 | 5 | 4 |
| False Principled | 16 | 11 | 5 | 5 |
| Fancied | 7 | 4 | 3 | 2 |
| Fanciful | 8 | 5 | 3 | 3 |
| Fantastic | 9 | 6 | 3 | 3 |
| Fantastical | 11 | 7 | 4 | 4 |
| Faultful | 8 | 5 | 3 | 2 |
| Faulty | 6 | 4 | 2 | 2 |
| Feigned | 7 | 4 | 3 | 1 |
| Fickle | 6 | 4 | 2 | 2 |
| Fictional | 9 | 5 | 4 | 3 |
| Fictive | 7 | 4 | 3 | 2 |
| Finagling | 9 | 6 | 3 | 3 |
| Fishy | 5 | 4 | 1 | 2 |
| Flawed | 6 | 4 | 2 | 1 |
| Forged | 6 | 4 | 2 | 2 |
| Forgery | 7 | 5 | 2 | 3 |
| Forsworn | 8 | 6 | 2 | 2 |
| Foxy | 4 | 3 | 1 | 2 |
| Fraud | 5 | 3 | 2 | 1 |

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