IPA: /ˈɡɪltɪnəs/
KK: /ˈɡɪltɪnəs/
The condition of feeling responsible for a wrongdoing or a crime.
She felt a deep sense of guiltiness after lying to her friend.
Guiltiness → It is formed from "guilt" (from Old English "gylt", meaning a crime or sin) and the suffix "-ness" (meaning the state or quality of). The word "guiltiness" refers to the state of being guilty or the quality of having committed a wrongdoing.
Think of the word 'guilt' which means a crime or sin, and remember that 'guiltiness' describes the state of having that guilt.