short·com·ing
[shawrt-kuhm-ing]
—noun  
a failure, defect, or deficiency in conduct, condition, thought, ability, etc.: a social shortcoming; a shortcoming of his philosophy.
—Synonyms 
fault, flaw, failing, weakness. 
shortcoming
[shawrt-kuhm-ing]
—noun  
a failure, defect, or deficiency in conduct, condition, thought, ability, etc.: a social shortcoming; a shortcoming of his philosophy.
—Synonyms 
fault, flaw, failing, weakness.