| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Abidingness | 11 | 7 | 4 | 4 |
| Age | 3 | 1 | 2 | 1 |
| Allegiance | 10 | 5 | 5 | 4 |
| Antiquity | 9 | 5 | 4 | 4 |
| Application | 11 | 6 | 5 | 4 |
| Assiduity | 9 | 5 | 4 | 4 |
| Assiduousness | 13 | 7 | 6 | 5 |
| Bulldog Tenacity | 16 | 11 | 5 | 6 |
| Bullheadedness | 14 | 9 | 5 | 4 |
| Care | 4 | 2 | 2 | 1 |
| Ceaselessness | 13 | 8 | 5 | 4 |
| Changelessness | 14 | 10 | 4 | 4 |
| Coeternity | 10 | 6 | 4 | 4 |
| Commitment | 10 | 7 | 3 | 3 |
| Concentration | 13 | 8 | 5 | 4 |
| Constancy | 9 | 7 | 2 | 3 |
| Continualness | 13 | 8 | 5 | 5 |
| Continuance | 11 | 6 | 5 | 4 |
| Continuation | 12 | 6 | 6 | 5 |
| Continuousness | 14 | 8 | 6 | 5 |
| Dedication | 10 | 5 | 5 | 4 |
| Defeat Of Time | 14 | 8 | 6 | 4 |
| Defiance Of Time | 16 | 9 | 7 | 5 |
| Dependability | 13 | 8 | 5 | 6 |
| Dependableness | 14 | 9 | 5 | 5 |
| Diligence | 9 | 5 | 4 | 3 |
| Diuturnity | 10 | 6 | 4 | 5 |
| Doggedness | 10 | 7 | 3 | 3 |
| Durability | 10 | 6 | 4 | 5 |
| Durableness | 11 | 7 | 4 | 4 |
| Duration | 8 | 4 | 4 | 3 |
| Endlessness | 11 | 8 | 3 | 3 |
| Endurance | 9 | 5 | 4 | 3 |
| Enduringness | 12 | 8 | 4 | 4 |
| Engrossment | 11 | 8 | 3 | 3 |

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