Afghanistan disconnected YouTube in the aftermath of the Libya tragedy, a dubious if understandable short-term solution.
The knife, which has always been a dubious piece of evidence will likely remain so.
It also has the dubious glory that, in parts of the Arab world at least, comes with inflicting pain on Israel.
1540s, from Latin dubiosus "doubtful," from dubium "doubt," neuter of dubius "vacillating, moving two ways, fluctuating;" figuratively "wavering in opinion, doubting, doubtful," from duo "two" (see two), with a sense of "of two minds, undecided between two things." Old English also used tweo "two" to mean "doubt." Cf. doubt (v.). Related: Dubiously; dubiousness.