If my belief ever had its origin in reason, it must be ever refutable by reason.
It is a race-slander, refutable by any honest investigator, that the American Negro as a race is unwilling to work.
It is certainly not the least charm of a theory, says Nietzsche, that it is refutable.
1510s, "refuse, reject," from Middle French réfuter (16c.) and directly from Latin refutare "drive back; rebut, disprove; repress, repel, resist, oppose," from re- "back" (see re-) + -futare "to beat," probably from PIE root *bhau- "to strike down" (see bat (n.1)).
Meaning "prove wrong" dates from 1540s. Since c.1964 linguists have frowned on the subtle shift in meaning towards "to deny," as it is used in connection with allegation. Related: Refuted; refuting.