IPA: /ʌnˈkɪŋli/
KK: /ʌnˈkɪŋli/
Not having the qualities or characteristics of a king; lacking regal dignity or authority.
His behavior was unkingly, showing no respect for tradition or leadership.
Unkingly → It is formed from "un-" (meaning not) and "kingly" (from "king" meaning a male monarch and the suffix "-ly" meaning in the manner of). The word "unkingly" means not in the manner of a king or lacking kingly qualities.
Think of 'not' ('un-') being added to 'kingly' to remember that 'unkingly' describes something that is not characteristic of a king.