Adverbs for Indefatigable

zealously; nimbly; strenuously; resolutely; busily; restlessly; amazingly; marvellously; miraculously; unbelievably; sturdily; stoutly; robustly; apparently; evidently; manifestly; inordinately; surprisingly; astoundingly; astonishingly; unexpectedly; marvellously; almost; pluckily; indomitably; manfully; actively.