Where does “thiefness” come from?

thiefness (English) comes from English thief, from Middle Scots theif, from Middle English þef, from Old English þēof, from Proto-West Germanic þeub, from Proto-Germanic þeubaz, from Proto-Indo-European tewpó-.

thiefness (English): The state or conduct of a thief; thievery

Definitions

  1. The state or conduct of a thief; thievery

Ancestry of “thiefness”, step by step

thiefness traces back through two separate lines of ancestry.

via English thief

StepLanguageWordMeaning
1EnglishthiefOne who carries out a theft; One who steals...
2Middle ScotstheifA criminal or villain; a malicious or lawbreaking person
3Middle EnglishþefAlternative form of thef
4Old Englishþēofthief
5Proto-West Germanicþeubthief
6Proto-Germanicþeubazthief
7Proto-Indo-Europeantewpó-

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European tewpó-Every word from Proto-Germanic þeubazEvery word from Proto-West Germanic þeub