Meaning of well-thriven in English:

well-thriven

adjective

dialect Scottish, British
  • That has grown, developed, or prospered well; thriving, flourishing. In later use chiefly of livestock.

Origin

Late Middle English; earliest use found in Cursor Mundi: a Northumbrian poem of the 14th century. From well + thriven.

Pronunciation

well-thriven

/ˌwɛlˈθrɪvn/