IPA: //ˌnɒn.əˈtændəns//
KK: /nɑnəˈtɛndəns/
The act of not being present at a place or event, especially when expected to be there.
Her nonattendance at the meeting raised concerns among her colleagues.
Nonattendance → It is formed from "non-" (meaning not) and "attendance" (from Latin "attendere", meaning to attend or to stretch toward). The word "nonattendance" means the state of not attending or being present.
Think of 'not' ('non-') being combined with 'attending' ('attendere') to remember that nonattendance means not being present.