regnum

KINGDOM
List of words for the clue regnum from the crossword:
RULE
WordClue
LAWrule or decree
CANONrule
CLASScategory, kingdom
FAMILYcategory, kingdom
FUNGUSkingdom of organisms
LONDONcapital of United Kingdom
REGNUMkingdom
ZOOLOGYstudy of the animal kingdom
CATEGORYkingdom, family
GUIDELINErule of thumb
BIRMINGHAMsecond largest city of United Kingdom
STYLEregister
GUILTregret