1.
fault, defect, weakness
A flaw or shortcoming in something or someone.
Related Words
Antonym:
長所 (strong point)
Synonym:
短所 (shortcoming (personality))
Antonym:
利点 (advantage, merit)
Compare:
弱点 (weak point)
Related:
粗 (fault, defect, flaw)
Compare:
問題点 (problem area)