- doubly armed suture,
- doubting thomas,
Origin of doubtful
Examples from the Web for doubtful
It is doubtful that any Churchill-like figure—were one available—could thrive.
Whether the vote in a rump referendum over the weekend genuinely reflected public opinion in the eastern-most regions is doubtful.
But it is doubtful anyone will ever prove who poisoned Arafat, if poisoned he was.
It's doubtful that they have any serious political disagreements.
It's doubtful there would have been enough fortification and firepower under any circumstances.
Some are doubtful about the last lines, but the word "promise" had a jubilant musical rhythm in my head.Juliana Horatia Ewing And Her Books|Horatia K. F. Eden
I was doubtful about it after I had watched Sir Henry for a whole morning on the bench.Christopher Quarles|Percy James Brebner
It was doubtful whether he loved Amy, in the true sense of exclusive desire.New Grub Street|George Gissing
If this produced any effect, which is doubtful, it was but temporary.A History of the Inquisition of Spain; vol. 4|Henry Charles Lea
Though Palestine abounds in flowers, it is doubtful whether the Rose of our gardens is alluded to in the Bible.Plant Lore, Legends, and Lyrics|Richard Folkard