Plural compound nouns

Unpacking moving boxes means dealing with a lot of household gadgets! In French, many of these items are compound nouns (words joined by hyphens). Making them plural depends on what types of words are combined.

Noun + Adjective

When a compound noun is made of a noun and an adjective, both parts take a plural marker (-s or -x).

There are two heavy safes in the living room.
Il y a deux coffres-forts lourds dans le salon.

Verb + Noun

The most common way to name a gadget in French is by combining a verb and a noun (like a "cork-puller" for a corkscrew). In these combinations, the verb NEVER takes an -s. The noun usually takes a plural -s or -x.

Where are you going to put the large coat racks?
Où vas-tu mettre les grands porte-manteaux ?

Notice how the verbs (tire and porte) remain unchanged, while the nouns (bouchons and manteaux) become plural.

Nouns Already Ending in -s or -x

If the noun part of the compound already ends in an -s or -x in its singular form, the word does not change at all in the plural. You simply change the article (like le to les).

I unpack the boxes and I find two nutcrackers.
Je déballe les cartons et je trouve deux casse-noix.
Why do we have three microwaves in the kitchen?
Pourquoi avons-nous trois micro-ondes dans la cuisine ?

Uncountable or Invariable Nouns

Sometimes, the noun in a verb-noun compound refers to something uncountable or abstract. In these cases, the noun does not take a plural -s.

For example, un lave-linge (a washing machine) literally washes linge (linens or laundry, an uncountable concept). Similarly, un abat-jour (a lampshade) blocks out jour (daylight). Because these concepts cannot be counted in this context, the compound nouns remain invariable in the plural.

While unpacking this box, I found some beautiful lampshades.
En déballant ce carton, j'ai trouvé de beaux abat-jour.
We are unpacking the washing machines. Are you taking care of it?
Nous déballons les lave-linge. Est-ce que tu t'en occupes ?