Sometimes we must turn to other languages to find le mot juste. Here are a whole bunch of foreign words with no direct English equivalent.
1. Kummerspeck (German)
Excess weight gained from emotional overeating. Literally, grief bacon.
2. Shemomedjamo (Georgian)
You know when you’re really full, but your meal is just so delicious, you can’t stop eating it? The Georgians feel your pain. This word means, “I accidentally ate the whole thing.”
3. Tartle (Scots)
The nearly onomatopoeic word for that panicky hesitation just before you have to introduce someone whose name you can’t quite remember.
4. Mamihlapinatapai (Yaghan language of Tierra del Fuego)
This word captures that special look shared between two people, when both are wishing that the other would do something that they both want, but neither want to do.
5. Backpfeifengesicht (German)
A face badly in need of a fist.
I think #5 is the best. German is a language that really allows you to get to the point.