penthouse

noun

pent·​house ˈpent-ˌhau̇s 

1

a

: a shed or roof attached to and sloping from a wall or building

b

: a smaller structure joined to a building : annex

2

: a structure or dwelling on the roof or top floor of a building

Synonyms of penthouse

• addition

Examples of penthouse in a Sentence

had a small penthouse built to serve as a toolshed

Recent Examples on the Web

Sets built in the multi-use studio included an upside-down passenger plane fuselage and an ornate Shanghai penthouse built over the indoor water tank, which were both used for high-octane action scenes. —Melanie Goodfellow, Deadline, 4 Dec. 2025

More penthouse than standard cruise cabin, guests can vacation like an Avenger during their sailing – with lavish perks that do the billionaire playboy proud. —Nathan Diller, USA Today, 4 Dec. 2025

Click here for more photos of the Manhattan penthouse. —Mark David, Robb Report, 2 Dec. 2025

Baby Trevor Bingley (Rowan Atkinson) is back, and plans to have a relaxing holiday season while housesitting a luxury penthouse in London. —Rachel Choy, Refinery29, 1 Dec. 2025

Word History

Etymology

alteration of Middle English pentis, from Anglo-French apentiz, from apent, past participle of apendre, appendre to attach, hang against — more at append

First Known Use

14th century, in the meaning defined at sense 1a

Rhymes for penthouse

• alehouse
• almshouse
• backhouse
• baghouse
• bakehouse
• bathhouse
• bauhaus
• blockhouse
• boathouse
• brewhouse
• bunkhouse
• clubhouse

Kids Definition

penthouse

noun

pent·​house ˈpent-ˌhau̇s 

1

: a sloping roof or a shed attached to a wall or building

2

: a structure (as an apartment) built on the roof of a building