Untrustworthy

a. (UN-¹ 7.)

1846.  Worcester (citing Ec. Rev.).

1853.  Ruskin, Stones Ven., III. ii. § 20. Knowledge is not only very often unnecessary, but it is often untrustworthy.

1878.  Bosw. Smith, Carthage, 314. The Gauls, untrustworthy as ever—except when led by Hannibal—were drawn up on a hill to the left.