arduously Synonyms

with great effort industriously hard way gruellingly gruelingly exhaustingly energetically distressingly cumbrously cumbersomely burdensomely agonisingly tiresomely painstakingly oppressively with difficulty unwieldily unbearably tryingly troublesomely toilsomely tiringly tiredly strenuously sonorously punishingly painfully laboriously severely awkwardly impenetrably heavily harshly hardly hard grindingly diligently difficultly densely cubically carefully badly inconveniently indefatigably assiduously torturously excruciatingly vigorously sedulously toughly