Fromprepared +‎-ness.

• (Received Pronunciation)IPA^(key): /pɹɪˈpɛə(ɹɪ)dnɪs/
• (General American)IPA^(key): /pɹɪˈpɛɹ(ə)dnɪs/

EnglishWikipedia has an article on:

preparedness

Wikipedia

preparedness (usuallyuncountable,pluralpreparednesses)

1. The state of beingprepared.

   preparedness for battle

   preparedness for an exam

   • 2020 June 3, Lilian Greenwood talks to Paul Stephen, “Rail's 'underlying challenges' remain”, inRail, page35:

     On herpreparedness to return to Labour's front bench under new Leader of the Opposition Sir Keir Starmer, she is non-committal.

2. Precautionarymeasures in the face of potentialdisasters.

• readiness

• preparation

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