unpopularity

From un- +‎ popularity or unpopular +‎ -ity.

• IPA^(key): /ˌʌnˌpɒpjʊˈlæɹɪti/

• Audio (Southern England):

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unpopularity (countable and uncountable, plural unpopularities)

1. The property or degree of being unpopular, or the absence or lack of popularity.
   • 1949 May and June, Charles E. Lee, “Double-Deck Railway Carriages”, in Railway Magazine, page 194:

     It was built at the Salt River works of the South African Railways in 1926 to the design of Oscar Hulse, and was placed on Cape Town suburban service in 1927, but was soon withdrawn because of its unpopularity.

• popularity