In some other stackexchange group, someone used the words "nadir of unprofessionalism" to express that in his opinion, some behaviour was very, very unprofessional.
Now "nadir" is the lowest point, and "zenith" is the highest point. But the words may also be used as "worst" and "best". Being very, very unprofessional is the highest degree of unprofessionalism, but at the same time also the worst case of unprofessionalism.
Is "nadir of unprofessionalism" a correct way to express "very, very unprofessional"? Or should it be "zenith of unprofessionalism"? Or would either be correct?