This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A deficiency; a flaw.

n. deficiency

n. The failure of a crop, or the like.

n. Neglect of, or failure in, performance of duty.

n. A falling-off of the usual produce, quantity, or amount, as of a crop.

n. A failure of performance, as of duty; a coming short; a delinquency.

n. a failing or deficiency

"Another major shortcoming is the lack of emotional depth."

disadvantage   

fault   

imperfection    flaw    drawback    failing    defect    frailty    blunder    inconsistency    limitation    foible