| persistently(adverb, thoroughly, closely, firmly, strictly) |
| stubbornly(adverb, resolutely, tenaciously) |
| determinedly(adverb, resolutely, tenaciously) |
| intently(adverb, thoroughly, closely, strictly, resolutely) |
| tenaciously(adverb, resolutely, tenaciously) |
| devotedly(adverb, resolutely, tenaciously) |
| diligently(adverb, thoroughly, closely, meticulously, resolutely) |
| resolutely(adverb, resolutely, tenaciously) |
| assiduously(adverb, thoroughly, closely, sharply, meticulously) |
| faithfully(adverb, resolutely, tenaciously) |
| hard(adverb, thoroughly, closely, actively, definitely) |
| steadily(adverb, thoroughly, closely, strongly, firmly) |
| indefatigably(adverb, resolutely, tenaciously) |
| industriously(adverb, thoroughly, closely, actively, meticulously) |
| obstinately(adverb, tenaciously) |
| relentlessly(adverb, resolutely) |
| steadfastly(adverb, tenaciously) |
| untiringly(adverb, thoroughly, closely, firmly, sharply) |
| tirelessly(adverb, resolutely, tenaciously) |
| fervently(adverb, tenaciously) |