The Collaborative International Dictionary
Effectless
Effectless \Ef*fect"less\, a.
Without effect or advantage; useless; bootless.
--Shak. --
Ef*fect"less*ly, adv.
Wiktionary
effectless
a. Having no effect or advantage.
Usage examples of "effectless".
They blinked and danced like beacons for the myriad denizens of the dark -- they flew around in a brave enchanting display -- but they were effectless, made nothing else visible.