薄弱

Adjective

 * 1)  weak; frail; lacking

Adjective

 * 1) unreliable
 * 2) (of one's physical strength, willpower, etc...) weak, feeble
 * 1) (of one's physical strength, willpower, etc...) weak, feeble

Noun

 * 1) unreliability
 * 2) (of one's physical strength, willpower, etc...) weakness, feebleness