grossir

The French verb "grossir" means "to gain weight" or "to get bigger." It is used both in literal and figurative senses.

Literal meaning:

• To increase in size, often referring to a person or animal gaining weight.
• To make something bigger or enlarge an object or image.

Example:

• « Il a grossi pendant l'hiver. » — He gained weight during the winter.
• « Grossis cette photo pour voir les détails. » — Enlarge this photo to see the details.

Figurative meanings:

• To grow or increase in quantity or intensity (e.g., a rumor or danger can "grossir").

Synonyms and differences:

1. Prendre du poids:
   Specifically means "to gain weight." Used mainly for people or animals gaining body weight. More neutral and polite than "grossir."

   • Ex: « Il a pris du poids récemment. »

2. Augmenter:
   Means "to increase" in general. Can be used for size, quantity, intensity but is more formal and not used for body weight.

   • Ex: « Le prix a augmenté. »

3. Enfler:
   Means "to swell," increasing in size due to inflammation or accumulation of fluid. Not used for body weight gain.

   • Ex: « Sa cheville a enflé après la blessure. »

4. S’épaissir:
   Means "to become thicker." Related to thickness, not weight or size overall.

"Grossir" is the primary term when talking about gaining weight or something getting bigger in general conversation and can be informal or neutral depending on tone.