fallible
I
adjective
deficient, errable, errant, erring, errori obnoxius, faulty, flawed, imperfect, liable to be erroneous, liable to mistake, not perfect, prone to error, prone to inaccuracy, uncertain, undependable, unpredictable, unreliable, unstable, unsure, untrustworthy, weak
II
index
disputable, dubious, peccable, unreliable, untrustworthy, vulnerable
Burton's Legal Thesaurus.
William C. Burton.
2006