infernalin‧fer‧nal /ɪnˈfɜːnl $ -ɜːr-/ adjective 
1[only before noun] old-fashioned used to express anger or annoyance about something: 
I wish the children would stop that infernal noise.2literary relating to hell and evil—infernally adverb
1[only before noun] old-fashioned used to express anger or annoyance about something: I wish the children would stop that infernal noise.2literary relating to hell and evil—infernally adverb