fal·li·ble 
(fălə-bəl)
(fălə-bəl)adj.
1. Capable of making an error: Humans are only fallible.
2. Tending or likely to be erroneous: fallible hypotheses.
[Middle English, from Medieval Latin fallibilis, from Latin fallere, to deceive.]
fal′li·bili·ty, falli·ble·ness n.
falli·bly adv.