kingless
/ˈkɪŋlz/ or /ˈkɪŋ.lɛs/Definitions
1. adjective
Lacking a king or a monarch; not having a king.
“The kingdom was declared kingless after the monarch’s sudden abdication.”
2. adjective
Relating to or characteristic of a kingless state or period.
“The historian studied the kingless era of the ancient civilization.”