Similar word to thorough:
absolute, all the way, all-embracing, all-inclusive, all-out, assiduous, blow-by-blow, careful, circumstantial, clocklike, complete, comprehensive, conscientious, detailed, efficient, exact, from A to Z, full, full-dress, in-depth, intensive, itemized, meticulous, minute, painstaking, particular, particularized, plenty, royal, scrupulous, slam-bang, soup to nuts, sweeping, tough, whole-hog
absolute, all the way, all-embracing, all-inclusive, all-out, assiduous, blow-by-blow, careful, circumstantial, clocklike, complete, comprehensive, conscientious, detailed, efficient, exact, from A to Z, full, full-dress, in-depth, intensive, itemized, meticulous, minute, painstaking, particular, particularized, plenty, royal, scrupulous, slam-bang, soup to nuts, sweeping, tough, whole-hog