IPA: /ˌɪnədˈvaɪzəˌbɪlɪti/
KK: /ɪnədˈvaɪzəˌbɪlɪti/
The quality of being unwise or not recommended, often because it could lead to negative consequences.
The inadvisability of investing in that company was clear after the recent financial reports.
Inadvisability → It is formed from "in-" (meaning not), "advisable" (from Latin "advisabilis", meaning worthy of consideration), and "-ity" (meaning the state or quality of). The word refers to the state of being not advisable or unwise.
Think of 'not' ('in-') being combined with something that is 'worthy of consideration' ('advisable') — that's why inadvisability means it's not wise to consider something.