abortive, anticlimactic, barren, bootless, defeasible, feckless, feeble, forceless, fruitless, futile, idle, impotent, inadequate, incompetent, indecisive, inefficacious, inefficient, inept, inferior, innocuous, inoperative, invertebrate, lame, limited, neutralized, nugatory, null, null and void, paltry, powerless, spineless, unable, unavailing, unfruitful, unproductive, unprofitable, unsuccessful, vain, void, withered, worthless
effective nor ineffective
Ironically, this question.
futile, vain, idle, useless, worthless, valueless, pointless, ineffective, ineffectual, unprofitable, unrewarding
affective means that it has an effect on your body or it makes you cause reaction. ineffective means the opposite
If you mean "ineffective", that means it's not effective.
Words meaning to cancel or make ineffective are void, revoke, annul, counteract, offset, invalidate...
Some words that mean like:Fond ofFavorresembleakin to
effective means-something positive can happen ineffective means-something negative can happen
not producing any effect -not going anywhere
Ineffective
It depends on what you mean. If you mean the most ineffective caliber, it's probably the .25 ACP or the .22 short. Some .25 cartridges have less energy than some .22 shorts.
When someone in the army made a plan and said its effective immediately they are saying they should do it right then and there. Then after someone gave that order if they decide not to do it it was ineffective.