Answer: kinged

AnswerCrossword Clue
KINGEDCrowned
KINGEDLike a powerful checker
KINGEDRuled (with "it").
KINGEDLike a double-decker checker
KINGEDCrowned, in checkers
kingedAct in an unpleasantly superior and domineering manner
kingedKING, to reign as a male monarch
kingedMake (someone) king