As nouns the difference between unadvisability and inadvisability
is that unadvisability
is while inadvisability
is the quality or state of being inadvisable.
The quality or state of being inadvisable.
:I had been warned of the inadvisability of disturbing sleeping dogs, so it did not surprise me when the wakened dog snarled at me.
*(quality or state of being inadvisable) foolhardiness, impropriety, imprudence, injudiciousness, rashness