useability

/Y UW1 Z IY0 AH0 B IH1 L IH0 T IY0/
noun
  1. 1

    The state or condition of being usable.

  2. 2

    The degree to which an object, device, software application, etc. is easy to use with no specific training.

Source: https://en.wiktionary.org/wiki/usability, https://en.wiktionary.org/wiki/useability