| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Effectiveness | 13 | 8 | 5 | 5 |
| Effectivity | 11 | 7 | 4 | 5 |
| Effectuality | 12 | 7 | 5 | 6 |
| Effectualness | 13 | 8 | 5 | 5 |
| Effervescence | 13 | 8 | 5 | 4 |
| Elan | 4 | 2 | 2 | 2 |
| Electrical Power | 16 | 10 | 6 | 6 |
| Electric Power | 14 | 9 | 5 | 5 |
| Emphasis | 8 | 5 | 3 | 3 |
| Endeavor | 8 | 4 | 4 | 3 |
| Endeavour | 9 | 4 | 5 | 3 |
| Energy | 6 | 4 | 2 | 3 |
| Enterprise | 10 | 6 | 4 | 3 |
| Enterprisingness | 16 | 11 | 5 | 5 |
| Enthusiasm | 10 | 6 | 4 | 5 |
| Ergal | 5 | 3 | 2 | 2 |
| Esprit | 6 | 4 | 2 | 2 |
| Exuberance | 10 | 5 | 5 | 4 |
| Fervency | 8 | 6 | 2 | 3 |
| Fervidness | 10 | 7 | 3 | 3 |
| Fervor | 6 | 4 | 2 | 2 |
| Fervour | 7 | 4 | 3 | 2 |
| Fire | 4 | 2 | 2 | 1 |
| Firing | 6 | 4 | 2 | 2 |
| First Step | 10 | 8 | 2 | 2 |
| Fleet | 5 | 3 | 2 | 1 |
| Flit | 4 | 3 | 1 | 1 |
| Flower Power | 12 | 8 | 4 | 4 |
| Flurry | 6 | 5 | 1 | 2 |
| Fly | 3 | 3 | 0 | 1 |
| Fly Ball | 8 | 7 | 1 | 2 |
| Fly Low | 7 | 6 | 1 | 2 |
| Foot | 4 | 2 | 2 | 1 |
| Force | 5 | 3 | 2 | 1 |
| Forcefulness | 12 | 8 | 4 | 4 |

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