| cruelly(adverb, fast, sprightly, severely, seriously) |
| grimly |
| persistently(adverb, resolutely, nonstop, repeatedly, determinedly) |
| deliberately(adverb, resolutely, in cold blood) |
| heartlessly(adverb, cruel, evil way) |
| remorselessly(adverb, cruel, fast, intensely, fiercely) |
| savagely(adverb, cruel, fast, sprightly, severely) |
| severely(adverb, fast, sprightly, intensely, fiercely) |
| unrelentingly(adverb, fiercely, violently, constantly, cruelly) |
| without pause |
| diligently(adverb, resolutely) |
| doggedly(adverb, resolutely) |
| fiercely(adverb, fast, sprightly, severely, seriously) |
| hard(adverb, fast, intensely, fiercely, violently) |
| inexorably(adverb, cruel, evil way) |
| mercilessly(adverb, cruel, evil way) |
| pitilessly(adverb, cruel, evil way) |
| resolutely(adverb, resolutely) |
| rigorously(adverb, fast, sprightly, severely, seriously) |
| steadily(adverb, resolutely) |