English

truthteller

From truth + teller.

A compound of truth + teller

Proto-Germanic *triwwiþō ‘truth, promise’

Proto-West Germanic *triuwiþu

Old English trēowþ ‘truth, good faith’

Middle English treuthe ‘loyalty, truth’

English truth

Middle English tellere ‘one who counts or enumerates’

Today it means

noun One who tells the truth.

Language periods are conventional ranges, not dates for this word.

Etymograph / truthteller