"fallible" in the adjective sense
1. fallible
likely to fail or make errors
"everyone is fallible to some degree"
2. fallible, frail, imperfect, weak
wanting in moral strength, courage, or will having the attributes of man as opposed to e.g. divine beings
"I'm only a fallible human"
"frail humanity"
Source: WordNet® (An amazing lexical database of English)
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