-uble
                suffix
     -          (forming adjectives) able to[构成形容词] 表示“可…的”:
-       voluble. 
-          ■ able to be表示“可被…的”:
-       soluble. 比较 -ABLE .
词源
from French, from Latin -ubilis.
ORIGIN: French  from Latin  -ubilis  adjectival suffix, the form taken by the suffix -bilis  (see -ble -vere , as solubilis  soluble solvere , volubilis  voluble volvere .