When seeking alternative terms for the word "unkingly", one might consider numerous synonyms to describe behavior or actions that are inconsistent with royal or noble customs. Words such as "unregal", "undignified", and "unworthy" come to mind, highlighting behaviors that fall short of the expected conduct of a monarch. One could also employ "unprincely", "ungentlemanly" or "unqueenly" to describe actions that do not befit a royal figure. These synonyms reflect a departure from the grace, poise, and decorum typically associated with kings and queens, emphasizing conduct that is beneath the stature of royalty.