If you tell someone that it is ~ to do something, you are suggesting that they should do it, because it is sensible or is likely to achieve the result they want. (FORMAL)
Because of the popularity of the region, it is ~ to book hotels or camp sites in advance...
= wise
ADJ: v-link ADJ, oft it v-link ADJ to-inf
advisability
I have doubts about the advisability of surgery in this case.
? inadvisability
N-UNCOUNT: the N of n