Definition of truepenny in English:

truepenny

noun

rare, informal
  • (A name for) a trustworthy, honest, or reliable person (likened to a coin of genuine metal). archaic in later use.

Origin

Mid 16th century; earliest use found in Nicholas Udall (1504–1556), schoolmaster and playwright. From true + penny.

Pronunciation

truepenny

/ˈtruːˌpɛni/