In'ef-fec'tive, a.

a. [Prefix in, not, and effective; Fr. ineffectif.] Not effective; incapable of producing any effect, or the effect intended; inefficient; useless.

The word of God, without the spirit, is a dead and ineffective letter. Taylor.

Synonyms—Useless; inefficient; inefficacious; vain; fruitless; weak. See USELESS.