IPA: /ˌdɛrəˈlɪkʃən/
KK: /ˌdɛrəˈlɪkʃən/
A situation where something is abandoned or neglected, often referring to duties or responsibilities that are not fulfilled.
The company's dereliction of its environmental responsibilities led to severe consequences.
Dereliction is formed from "de-" (meaning down or away) and "relictio" (from Latin, meaning to abandon or leave behind). The word describes the act of abandoning or neglecting a duty or responsibility.
Think of 'down' or 'away' ('de-') from something that is 'abandoned' ('relictio') — this helps you remember that dereliction means neglecting a duty.