fallible
AdjectiveWordNet 3.0
Webster's Dictionary (GCIDE)
Fallible \Fal"li*ble\, a. [LL. fallibilis, fr. L. fallere to deceive: cf. F. faillible. See Fail.] Liable to fail, mistake, or err; liable to deceive or to be deceived; as, all men are fallible; our opinions and hopes are fallible. [1913 Webster]