assiduously, arduously, determinedly, diligently, hard, industriously, intently, laboriously, purposefully, resolutely, amain, doggedly, intensely, intensively, sedulously, strenuously, hardly, mightily, busily, actively, vigorously, steadily, conscientiously, energetically, willfully, obstinately, zealously, perseveringly, steadfastly, unwaveringly, with a will, tirelessly, painfully, painstakingly, earnestly, firmly, with gritted teeth, eagerly, committedly, like a Trojan, nose to the grindstone, without slacking, onerously, resolvedly, fixedly, decisively, exhaustingly, burdensomely, heavily, troublesomely … more