Common words:
* in (in) - The most straightforward!
* fin (end)
* vin (wine)
* sin (sin)
* brin (strand, twig)
* main (hand)
* plein (full)
* loin (far)
* brin (strand)
* min (minute)
* pin (pine tree)
Less common words:
* sphinx (sphinx)
* sphinx (sphinx)
* andin (relating to the Andes)
* quin (fifth)
* quinzaine (fortnight)
* sphinx (sphinx)
* sphinx (sphinx)
Words with "in" in the middle:
* machine (machine)
* patine (patina)
* famine (famine)
* antine (anti-religious)
This is just a start, of course. French is full of words containing "in"! Let me know if you're looking for words with a specific meaning or would like to explore more!