1The new video game is infernally difficult, and I've been stuck on this level for hours.
2Was the traffic infernally bad during rush hour, or did you take a detour?
3She found the noise from the construction site infernally loud and could not concentrate.
4Try not to be infernally critical of your first draft; just focus on getting your ideas down.
5There is something infernally frustrating about waiting for a response to a job application that never comes.