| carefully(adverb, thoroughly, seriously, intensely, vigorously) |
| indefatigably(adverb, vigorously, earnestly, actively, hastily) |
| industriously(adverb, thoroughly, seriously, vigorously, closely) |
| assiduously(adverb, thoroughly, seriously, vigorously, closely) |
| strenuously(adverb, thoroughly, seriously, vigorously, closely) |
| sedulously |
| painstakingly(adverb, thoroughly, seriously, vigorously, closely) |
| persistently(adverb, thoroughly, seriously, vigorously, closely) |
| doggedly(adverb, thoroughly, closely, meticulously, resolutely) |
| laboriously(adverb, vigorously, earnestly, actively, hastily) |
| thoroughly(adverb, closely, carefully, meticulously, faithfully) |
| tirelessly(adverb, resolutely, tenaciously) |
| conscientiously(adverb, meticulously, fastidiously, vigilantly, industriously) |
| attentively(adverb, thoroughly, carefully, meticulously, faithfully) |
| devotedly(adverb, resolutely, tenaciously) |
| faithfully(adverb, thoroughly, carefully, meticulously, resolutely) |
| fervently(adverb, vigorously, earnestly, actively, hastily) |
| hard(adverb, thoroughly, closely, carefully, meticulously) |
| heedfully(adverb, thoroughly, carefully, meticulously, faithfully) |
| intently(adverb, thoroughly, closely, carefully, faithfully) |