Fatsoes is a 7 letter English word. It's valid Scrabble word worth 8 points. It's valid Words with friends word worth 8 points.
You can make 158 anagrams from letters in fatsoes (aefosst).
1940-45; perhaps Fats a nickname for a fat person (see fat, -s4) + -o; also compared with fat sow, German Fettsa