The life of Christ would have been inefficient without His death.
"The Expositor's Bible: The Gospel of St. John, Vol. I"
Marcus Dods
Owing to ill-health and inexperience, Parker had proved himself inefficient in Alaskan work.
"My Attainment of the Pole"
Frederick A. Cook
The limb shaping towards a wing would be a very clumsy and inefficient leg long before it got to the point at which it became of the slightest use for purposes of flight, that is to say before its alteration was accompanied by any utility whatever.
"The Old Riddle and the Newest Answer"
John Gerard