Definition of well-willer in English:

well-willer

noun

rare, historical, archaic
  • Frequently with possessive: a person who desires the well-being, happiness, or success of another; a supporter.

Origin

Late Middle English; earliest use found in Henry VI (1421–1471), king of England and lord of Ireland, and duke of Aquitaine. From well + willer.

Pronunciation

well-willer

/ˌwɛlˈwɪlə/