IPA: /ɪnˈɛkspɪdiəns/
KK: /ɪnˈɛkspɪdiəns/
The quality of being unsuitable or not appropriate for a particular purpose or situation.
The inexpedience of the plan became clear when it failed to achieve its goals.
Inexpedience → It is formed from "in-" (meaning not) and "expedient" (from Latin "expedientem", meaning advantageous or suitable). The word "inexpedience" refers to the quality of being not advantageous or suitable for a particular purpose.
Think of 'not' ('in-') being combined with 'suitable' ('expedient') — that's why inexpedience means something that is not suitable or advantageous.