Definition of overruler in English:

overruler

noun

  • A person who controls, directs, or overrules others; one who holds supreme authority.

Origin

Late 16th century; earliest use found in Philip Sidney (1554–1586), author and courtier. From overrule + -er, probably partly after ruler.

Pronunciation

overruler

/ˌəʊvəˈruːlə/