Ineffectual

Part of speech: adjective (a.)

Not producing the proper effect; without effect; inefficient; weak; useless; futile; unavailing; as, an ineffectual attempt; an ineffectual expedient. Pope. The peony root has been much commended, . . . and yet has been by many found ineffectual. Boyle.

Synonyms: Inefficient; useless; inefficacious; vain; fruitless; unavailing; futile. See Uselesss, Inefficacious.