Ineffective

1.

(incapable of producing any effect or the effect intended) ដែលមិនបានផល, សម្រេចផល, ដែលមិនស័ក្ដសិទ្ធិ, បានផល, ដែលមិនសម្រេចអំពើ, លទ្ធផល
Example: She is totally ineffective as a teacher.

2.

(បច្ចេកទេស) មិនមានឥទ្ធិពល, មិនសក័្តសិទ្ធិ

1.

Not effective; ineffectual; futile; inefficient; useless; as, an ineffective appeal.

1.

debilitated decrepit, delicate, feeble, impotent, infirm, illogical, inadequate, lame, poor, vague

2.

irresolute, pliable, vacillating, wavering, weak

3.

assailable, defenseless, exposed, vulnerable

1.

potent, powerful, robust, strong, sturdy