| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Able | 4 | 2 | 2 | 2 |
| Accomplishable | 14 | 9 | 5 | 5 |
| Achievable | 10 | 5 | 5 | 4 |
| Achieving | 9 | 5 | 4 | 3 |
| Active | 6 | 3 | 3 | 2 |
| Actual | 6 | 3 | 3 | 3 |
| Adept | 5 | 3 | 2 | 2 |
| Adequate | 8 | 3 | 5 | 3 |
| Adequate Top | 12 | 6 | 6 | 5 |
| Aetiologic | 10 | 4 | 6 | 5 |
| Aetiological | 12 | 5 | 7 | 6 |
| Ascertained | 11 | 6 | 5 | 3 |
| Attested | 8 | 5 | 3 | 3 |
| Authentic | 9 | 5 | 4 | 3 |
| Authenticated | 13 | 7 | 6 | 5 |
| Authorised | 10 | 5 | 5 | 3 |
| Authoritative | 13 | 6 | 7 | 5 |
| Authorized | 10 | 5 | 5 | 4 |
| Banausic | 8 | 4 | 4 | 3 |
| Bandaging | 9 | 6 | 3 | 3 |
| Behind The Scenes | 17 | 12 | 5 | 4 |
| Bewitching | 10 | 7 | 3 | 3 |
| Big | 3 | 2 | 1 | 1 |
| Binding | 7 | 5 | 2 | 2 |
| Bona Fide | 9 | 5 | 4 | 3 |
| Capable | 7 | 4 | 3 | 3 |
| Captivating | 11 | 7 | 4 | 4 |
| Categorically True | 18 | 11 | 7 | 7 |
| Causal | 6 | 3 | 3 | 2 |
| Causal Factor | 13 | 8 | 5 | 4 |
| Causative | 9 | 4 | 5 | 3 |
| Certain | 7 | 4 | 3 | 2 |
| Certainly | 9 | 6 | 3 | 3 |
| Certified | 9 | 5 | 4 | 3 |
| Charismatic | 11 | 7 | 4 | 5 |
Efficacious Synonyms
Cognitive synonyms list for efficacious. Efficacious is a 11 letter word, used as a article, an SAT word with Old French origins, and has the letters acceffiiosu (acefiosu). Starts with e, ends with s, five consonants, six vowels and four syllables.
Learn how to use the easiest words finder here. Word lists are in the order of the most common words and most searched.
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