| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Forethoughtful | 14 | 9 | 5 | 4 |
| Forewarning | 11 | 7 | 4 | 4 |
| Forgery | 7 | 5 | 2 | 3 |
| Fortunetelling | 14 | 9 | 5 | 5 |
| Fortune Telling | 15 | 10 | 5 | 5 |
| Fraud | 5 | 3 | 2 | 1 |
| Freak | 5 | 3 | 2 | 1 |
| Funny | 5 | 4 | 1 | 2 |
| Gain | 4 | 2 | 2 | 1 |
| Garbled | 7 | 5 | 2 | 2 |
| Ghostlike | 9 | 6 | 3 | 2 |
| Ghostly | 7 | 6 | 1 | 2 |
| Gilded | 6 | 4 | 2 | 2 |
| Given | 5 | 3 | 2 | 2 |
| Granted | 7 | 5 | 2 | 2 |
| Grotesque | 9 | 5 | 4 | 2 |
| Groundless | 10 | 7 | 3 | 2 |
| Heaven Sent | 11 | 7 | 4 | 3 |
| Hinted | 6 | 4 | 2 | 2 |
| Hokey | 5 | 3 | 2 | 2 |
| Hypocrite | 9 | 6 | 3 | 3 |
| Hypothetic | 10 | 7 | 3 | 4 |
| Hypothetical | 12 | 8 | 4 | 5 |
| Ideal | 5 | 2 | 3 | 2 |
| Ideational | 10 | 4 | 6 | 4 |
| Idle | 4 | 2 | 2 | 2 |
| Iffy | 4 | 3 | 1 | 2 |
| Illegitimate | 12 | 6 | 6 | 5 |
| Illegitimate Child | 18 | 11 | 7 | 7 |
| Illogical | 9 | 5 | 4 | 4 |
| Illusional | 10 | 5 | 5 | 4 |
| Illusionary | 11 | 6 | 5 | 5 |
| Illusionist | 11 | 6 | 5 | 4 |
| Illusive | 8 | 4 | 4 | 3 |
| Illusory | 8 | 5 | 3 | 4 |

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