🇫🇷 French

la maison, not le maison: French's Other Gender Spelling Trap

la maison, pas le maison : le piège des terminaisons en français

October 9, 2026

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French sorts nouns into two genders, le (masculine) and la (feminine), and offers a set of spelling patterns to help you guess: words ending in -age are usually masculine, words ending in -ure are usually feminine, and so on. These patterns genuinely help, most of the time. But the same trap we found hiding in Spanish and German endings shows up in French too: a two- or three-letter ending can be shared by two completely unrelated word-formation patterns, and only one of them actually predicts gender reliably.

The clearest case is -on. Plenty of ordinary -on words really are masculine — le bouton (button), le camion (truck), le wagon (train car). But hidden inside that same two-letter ending is a completely different, much older pattern: French nouns descended from a Latin action-noun ending in -ionem — "-son," "-çon," or "-xion" rather than a bare "-on" — and that pattern is reliably feminine. We compared every noun in this dictionary's French–English pair against the gender its ending predicts and found 172 mismatches; the single biggest group, by far, is exactly this.

Look for -son, not just -on

la maison (house), la raison (reason), la saison (season), la boisson (drink), la chanson (song), la leçon (lesson), la région (region), la prison (prison), la façon (way, manner), and la livraison (delivery) are all feminine — every one of them ends in "-son" or "-çon," not a bare "-on." Once you know to check for those extra letters before the ending, the pattern becomes reliable again in both directions.

The real -ée is reliable. Borrowed Greek "-ée" isn't.

A word that genuinely carries the French "-ée" suffix — la journée (day), la année (year), la soirée (evening) — is feminine, meaning roughly "a whole day's/year's/evening's worth of." But le lycée (high school), le musée (museum), le trophée (trophy), le scarabée (beetle), and le colisée (coliseum) aren't built with that suffix at all — they're borrowed straight from Greek or Latin words that were never feminine in the first place, and they stay masculine in French.

The real -té is reliable. These aren't using it.

The suffix that turns an adjective into an abstract quality — la liberté (freedom), la vérité (truth) — is one of French's most dependable patterns: always feminine. But le comité (committee), le député (MP, deputy), le traité (treaty), and l'été (summer) aren't abstract qualities built from an adjective; they're unrelated words (mostly old participles, or loanwords like le karaté) that simply end the same way, and all of them are masculine.

The real -ure is reliable. Greek mythology isn't.

The suffix that builds a noun out of a verb — la voiture ("that which carries"), la culture, la nature — is reliably feminine. But le dinosaure, le centaure, and le minotaure all come from the Greek root -sauros/-tauros ("lizard"/"bull"), nothing to do with that suffix at all, and le mercure (mercury) is simply named after the god. All four are masculine.

Same trap, four different endings: ask whether the letters at the end of a French word are really doing grammatical work, or whether the word just happens to be spelled that way. Every entry page in our French dictionary already shows this visually: the background colour is the word's real gender, and the underline is the gender its ending would have predicted — so a trap like la maison is something you can see at a glance.