Bootlessnesses is a word with 15 letters that follows the pattern of adding -nesses to the end of the adjective bootless, meaning without success or futility. In IPA phonetic transcription, it is written as /ˈbuːt.ləs.nəs.es/, with stress on the first syllable /ˈbuːt/. The double -ss in the word indicates the plural form and the -es at the end signifies pluralization of a noun ending in -s or -z. While the spelling may seem complex, it is a standard formation in English.