OXFORD DICTIONARY
-some, suffix forming adjectives meaning:
1 adapted to; productive of (cuddlesome; fearsome).
2 characterized by being (fulsome; lithesome).
3 apt to (tiresome; meddlesome).
-some, suffix forming nouns from numerals, meaning 'a group of (so many)' (foursome).
-some, comb. form denoting a portion of a body, esp. of a cell (chromosome; ribosome).
Gk soma body