| Synonyms | Length | Vowels | Syllables | |
|---|---|---|---|---|
| Grumbling | 9 | 7 | 2 | 2 |
| Grumpish | 8 | 6 | 2 | 2 |
| Grumpy | 6 | 5 | 1 | 2 |
| Haggle | 6 | 4 | 2 | 2 |
| Haggling | 8 | 6 | 2 | 2 |
| Half Crazed | 11 | 8 | 3 | 2 |
| Hard | 4 | 3 | 1 | 1 |
| Harebrained | 11 | 6 | 5 | 3 |
| Haywire | 7 | 4 | 3 | 2 |
| Headstrong | 10 | 7 | 3 | 2 |
| High Strung | 11 | 9 | 2 | 2 |
| Highly Emotional | 16 | 10 | 6 | 5 |
| Highly Strung | 13 | 11 | 2 | 3 |
| High Mettled | 12 | 9 | 3 | 3 |
| High Spirited | 13 | 9 | 4 | 4 |
| High Strung | 11 | 9 | 2 | 2 |
| Hostile | 7 | 4 | 3 | 2 |
| Hot Tempered | 12 | 8 | 4 | 3 |
| Howl | 4 | 3 | 1 | 1 |
| Howling | 7 | 5 | 2 | 2 |
| Huffish | 7 | 5 | 2 | 2 |
| Huffy | 5 | 4 | 1 | 2 |
| Humorsome | 9 | 5 | 4 | 3 |
| Husky | 5 | 4 | 1 | 2 |
| Hybridisation | 13 | 8 | 5 | 5 |
| Hybridization | 13 | 8 | 5 | 5 |
| Hybridizing | 11 | 8 | 3 | 4 |
| Hyperesthetic | 13 | 9 | 4 | 5 |
| Hyperpathic | 11 | 8 | 3 | 4 |
| Ideational | 10 | 4 | 6 | 4 |
| Idiocratic | 10 | 5 | 5 | 5 |
| Idiosyncratic | 13 | 8 | 5 | 6 |
| Idiotic | 7 | 3 | 4 | 4 |
| Ignitable | 9 | 5 | 4 | 4 |
| Ignitible | 9 | 5 | 4 | 4 |

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