Person nouns that keep their gender, whoever they describe
In French, some nouns for people have a fixed grammatical gender that never changes, whether the person is a man, a woman or a child. Une personne is always feminine, even when you are talking about your uncle. Un bébé is always masculine, even when the baby is a girl. The same goes for une victime, un témoin, une vedette and un ange.
English speakers trip over this because English nouns have no gender. When the person is clearly male or female, it feels natural to match the article and adjectives to that person. In French, the words that belong to the noun (articles, possessives and adjectives) agree with the noun, not with the person behind it.
Look at the noun, not the person. If the noun is feminine, use une, la, ma and feminine adjectives. If it is masculine, use un, le, mon and masculine adjectives. The person's sex does not matter.
Notice the difference: Paul est gentil uses a masculine adjective because it describes Paul directly. In une personne très gentille, the adjective describes personne, so it is feminine. The plural personnes works the same way, even for a group of men.
Besides personne, you have un être humain (a human being) and un individu (an individual), both masculine for everyone. Bébé is masculine for every baby.
Ange and ange gardien stay masculine, so you say tu es un ange to a woman too.
Star, vedette and célébrité are always feminine, and so are star de cinéma and vedette de cinéma.
Victime and connaissance (an acquaintance) are feminine. Témoin is masculine.
At higher levels you will meet génie, personnage (a character in a story), bourreau de travail and rat de bibliothèque, all masculine, and taupe (a mole, a spy) and marionnette (a puppet), both feminine.
Other classic examples are recrue, sentinelle and mannequin.
The rule covers the words attached to the noun. A pronoun that refers to the person can follow the person's sex.
The typical mistake is un personne or une bébé. Keep the noun's gender every time.
Some words are changing. Nouns for jobs and roles such as médecin, auteur, ingénieur, vainqueur and sage-femme now often get feminine agreement or new forms (une médecin, une autrice), so they do not belong in this group. You may also hear la témoin in casual speech or a rare, informal individue, but the fixed forms remain the safe standard.
With nouns like personne, bébé, victime, témoin and vedette, the article and the adjectives agree with the noun, never with the person. Say Paul est une personne gentille and ta fille est un bébé adorable. Only pronouns that refer back to the person, like il or elle, can follow the person's sex.







