- ineffectual⇄adv. ineffectually.
- ineffectual⇄ineffectual, adjective.
1. without effect; useless.
Ex. The searchlights were ineffectual in the fog.
(SYN) ineffective, futile, vain, fruitless, unavailing.
2. not able to produce the effect wanted; powerless. - ineffectual⇄noun ineffectualness.