wraith
RAYTH · noun
Middle ScotsEnglish
Origin
Wraith enters English from Middle Scots, first attested in 1513 in a translation of the Aeneid. Its earlier history is uncertain, though it may be a transferred use of Middle Scots wraith meaning 'anger, rage' or 'angry, wrathful.'
Journey
The word's meaning seems to have shifted from something tied to anger or fury toward the pale, spectral sense of a ghost or apparition, though the exact path is unknown.
Related words
If the theory linking it to Middle Scots wraith ('wrath') holds, this word would be a doublet of wrath and wroth, and distantly tied to writhe.