OpenEtymology

two-family

UKˌtuː ˈfæm.əl.iUSˌtuː ˈfæm.əl.i

Meaning

1adj

(of a house or building) designed for or occupied by two separate families or households.

Structure

word structure
1
two
numeral
+
2
family
noun

Usage

They live in a two-family house, renting the first floor while the owners occupy the second.

The neighborhood is primarily composed of two-family dwellings built in the early 20th century.

Zoning laws in this area permit the construction of two-family homes.

Etymology

The compound "two-family" is a modern American English formation describing a specific type of residential building. The numeral "two" traces its lineage directly from Old English, maintaining its core quantifying function. The noun "family" entered English via French from Latin familia, which originally denoted the entire household, including servants under the authority of the paterfamilias. In this compound, the ancient concept of a domestic unit is combined with a simple numerical prefix, creating a precise architectural and real estate term that logically denotes a structure designed to accommodate two distinct domestic groups under one roof.

Analysis

Structure
two (numeral) + family (noun)=twonumeral+familynoun

- two: From Old English twā (feminine and neuter), related to Proto-Germanic twai, Proto-Indo-European dwóh₁. Functions as a numeral quantifier. - family: From Latin familia (household, servants), from famulus (servant). Functions as the core noun being modified.

Two-family Meaning & Word Parts (two + family) | OpenEtymology