IPA: //ˌnɒnəˈpɪərəns//
KK: /nɑnəˈpɪərəns/
The act of not appearing when expected, especially in a legal context, such as when a defendant or witness fails to show up in court.
The judge issued a warrant for the arrest of the defendant due to his nonappearance at the trial.
Nonappearance → It is formed from "non-" (meaning not) and "appearance" (from Latin "apparere", meaning to appear). The word "nonappearance" means the state of not appearing or being present.
Think of 'not' ('non-') and 'appearing' ('apparere') to remember that 'nonappearance' refers to the state of not being present.