I came across this phrase below which is meant to be filled in with the correct form on the word "sustain".
The report highlights fears that currently rapid increases in yields come at
the expense of _______.
However I found that it could be filled in with both "sustainability" and "unsustainability".
In the first case the phrase would suggest one would have to sacrifice sustainability for a faster increase in yields.
In the second case it suggests one would achieve greater unsustainability if the yields were to increase at a faster pace.
In my opinion, both basically mean the same thing, yet the word is used in its exact opposite forms; although I do agree simply using "sustainability" does not overcomplicate the meaning of the phrase.
What do you guys think? I believe the same could apply with many other words.