monarchs is a form of:

Monarch



noun
1.
(ruler with the title of king queen emperor or empress, a large orange and black butterfly) រាជ, ស្ដេច, ព្រះមហាក្សត្រ, ព្រះរាជា
Example: We all bowed our heads with respect as the monarch entered the room with her (his) redness.
2.
(បច្ចេកទេស) ព្រះមហាក្សត្រ, ព្រះរាជា
ENGLISH MEANING
noun
1.
A sole or supreme ruler; a sovereign; the highest ruler; an emperor, king, queen, prince, or chief.
2.
One superior to all others of the same kind; as, an oak is called the monarch of the forest.
3.
A patron deity or presiding genius.
4.
A very large red and black butterfly (Danais Plexippus); -- called also milkweed butterfly.
adjective
1.
Superior to others; preeminent; supreme; ruling.
1.
despot, governor, king, lord, master, prince, ruler, sovereign