All Words: efficiency, efficient, efficiently, efficacious, efficacy, efficaciousness, and efficaciously
| Word | Length | Vowels | Syllables | |||
|---|---|---|---|---|---|---|
| Efficiency | 10 | 6 | 4 | 5 | Latin | |
| Efficient | 9 | 5 | 4 | 4 | Old French | |
| Efficiently | 11 | 7 | 4 | 5 | ||
| Efficacious | 11 | 5 | 6 | 4 | Old French | |
| Efficacy | 8 | 5 | 3 | 4 | Old French | |
| Efficaciousness | 15 | 8 | 7 | 5 | ||
| Efficaciously | 13 | 7 | 6 | 5 |
Prefix: effic-. List of words that begin like effic / start with effic.

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