reverse loss (sometimes called a "reverse ski-slope" loss) is characterized by an audiogram which is low in the low frequencies and rises in the high frequencies.
It means that you hear high frequency sounds better than you hear low frequency sounds.
Reverse losses are not very common and present special challenges in fitting a hearing aid, but the good news is that modern hearing aids are much more capable of successfully fitting a reverse loss.
Other types of losses that are not very common include:
All of these types of losses are much less common than the ski-slope loss.