ETYMOLOGY
from Latin inficientem (that does nothing), from in- + facientem (doing)
EXAMPLE
“… Lent. How well thy power can shun that which
I followe with obedience. Too true yfaith;
Thou mightst as well put out the eie of day,
Or cover sinne from heaven, or to erect
A towre of sand on the uncertain surge,
Or any thing that were more inficient,
Then to remoove one doting thought of mine
From her disdain. Thy aide, deere Tulley,
Be thou an Orratour for Lentulus,
My tongue stands tund to a harsher method …”
From: Euerie Woman in her Humor
Unknown author, 1609
Lexicophilia 