adjective
- (of persons) liable to err, especially in being deceived or mistaken.
- liable to be erroneous or false; not accurate: fallible information.
adjective
- capable of being mistaken; erring
- liable to mislead
early 15c., from Medieval Latin fallibilis “liable to err, deceitful.” literally “that can be deceived,” from Latin fallere “deceive” (see fail).