| A | B |
| Hamper | Delay, obstruct, hinder, block |
| Handful | Not many, only a few |
| Haphazard | Random, chance, aimless, unplanned |
| Hardly | Barely, scarcely |
| Hardship | Difficulty, trouble |
| Harm | Injure, damage |
| Harmful | Hurtful, destructive |
| Harmony | Accord, agreement, peace |
| Harmonious | Agreeable, friendly, peaceful |
| Harness | Control, utilize, |
| Harsh | Severe, rough, strict |
| Hasty | Quick, rushed, hurried |
| Hazardous | Dangerous, risky |
| Hazy | Misty, cloudy, foggy, unclear, fuzzy, obscure |
| Heed | Obey, listen to, mind, follow |
| Hinder | Block, obstruct, hamper |
| Hitherto | Up to now, previously, so far |
| Hoist | Lift, raise, pick up |
| Hue | Color, tint, shade |
| Huge | Enormous, giant, colossal, immense |
| Hurl | Pitch, throw, fling |
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