adjective. Not producing an intended effect; ineffectual.

adjective. Inadequate; incompetent.

Not effective; not producing any effect, or the effect desired; wanting effective energy or operation; inefficient; impotent: as, ineffective efforts; an ineffective blow.

adjective. Not effective; not having the desired effect; ineffectual; futile; inefficient; useless.

adjective. not having the desired effect; ineffectual

adjective. lacking in ability; incompetent or inadequate

adjective. not producing an intended effect

adjective. lacking in power or forcefulness

adjective. lacking the ability or skill to perform effectively; inadequate

"And because those weapons are so ineffective, we’ll use your neighbourhood as a testing ground…..ineffective as they are, you’ll probably survive……."

impotent  incompetent  toothless  unproductive  

affective  anti-infective  collective  connective  convective  

erroneous  futile  impractical  inadequate  inappropriate  

abortive  aimless  barren  bootless  counterproductive