penthouse

The story

1. Latin · derived fromappendō“to append”
2. Anglo-Norman · derived frompentiz“pentice”
3. English todaypenthouse

From Anglo-Norman pentiz (“pentice”), from apendiz (“appentice”), ultimately from a suffixed form of Latin appendō (“to append”). Altered by folk etymology to appear to be a compound of house. Doublet of appentice and pentice.

Words from the same roots

First known use, by meaning

• from 14th c. A structure or annexe (especially one with a sloping roof) extending from the side of a building, sometimes as protection from the weather.
• from 16th c. Something forming a shelter or canopy over something; an awning, shelter, etc.
• from 17th c. Any of the sloping roofs at the side of a real tennis court.
• from 19th c. An apartment or suite found on an upper floor, or floors, of a tall building, especially one that is expensive or luxurious with panoramic views.