Intermediate (B1)
IPA: /ˌʌndɪˈzaɪərəˌbɪlɪti/
KK: /ʌndɪˈzaɪərəbɪlɪti/
Definition
The quality or state of being not wanted or not liked.
Example
The undesirability of the location made it hard to sell the house.
Conversation

I heard they canceled the project due to its undesirability.

Really? I thought it had potential.

Yeah, but I guess some people found it too risky and not worth pursuing.

That makes sense; sometimes the risks can really highlight the undesirability of an idea.
Synonyms & Antonyms
Synonyms
unattractiveness
disfavor
unpopularity
Antonyms
desirability
appeal
favorability
Root Explanation
Undesirability → It is formed from "un-" (meaning not), "desire" (from Latin "desiderare", meaning to long for or wish for), and "-ability" (meaning the quality of being). The word "undesirability" refers to the quality of not being wanted or wished for.
Memory Tip
Think of 'not' ('un-') wanting something ('desire') — that's why undesirability means something that is not wanted.
Visually Confused Words
desirability
launderability
untirability
vulnerability
unsuitability
unsociability
unsinkability
unsingability