(a.) Not settled in opinion; undetermined; wavering; hesitating in belief; also used, metaphorically, of the body when its action is affected by such a state of mind; as, we are doubtful of a fact, or of the propriety of a measure.
(a.) Admitting of doubt; not obvious, clear, or certain; questionable; not decided; not easy to be defined, classed, or named; as, a doubtful case, hue, claim, title, species, and the like.
(a.) Characterized by ambiguity; dubious; as, a doubtful expression; a doubtful phrase.
(a.) Of uncertain issue or event.
(a.) Fearful; apprehensive; suspicious.
Example Sentences:
(1) In a further study 1082 patients with a negative or doubtful result of the physical examination were investigated using ultrasound.
(2) p-Chlorophenylalanine (PCPA) also reduced the response to levodopa but the usefulness of PCPA as an inhibitor of 5HT synthesis in these experiments in doubtful since it also inhibited the hypoglycaemic effects of 5HTP and i.c.v.
(3) There is no doubt that new techniques in molecular biology will continue to evolve so that the goal of gene therapy for many disorders may be possible in the future.
(4) I never had any doubt that the vast majority of people engaged in "business" are not the exploiters but the exploited.
(5) There is no doubt that psychological, reactive and environmental factors do play a certain role too.
(6) Paul Doyle Kick-off Sunday midday Venue St Mary’s Stadium Last season Southampton 2 Leicester City 2 Live Sky Sports 1 Referee Michael Oliver This season G 18, Y 60, R 1, 3.44 cards per game Odds H 5-6 A 4-1 D 5-2 Southampton Subs from Taylor, Martina, Stephens, Davis, Rodriguez, Sims, Ward-Prowse Doubtful Bertrand, Davis, Van Dijk (all match fitness) Injured Boufal (knee, Jan), Hesketh (ankle, Feb), Targett (hamstring, Feb), Austin (shoulder, Mar), Pied (knee, Jun), Gardos (knee, unknown) Suspended None Form DWLLLL Discipline Y37 R2 Leading scorer Austin 6 Leicester City Subs from Zieler, Hamer, Wasilewski, Gray, Fuchs, James, Okazaki, Hernández, Kapustka, King Doubtful None Injured None Suspended None Unavailable Amartey, Mahrez, Slimani (Africa Cup of Nations) Form LDLWDL Discipline Y44 R1 Leading scorers Slimani, Vardy 5
(7) Without that, and without undertaking big changes, the service's future may fall into doubt, he says.
(8) This is welcome news but it needs to be borne in mind that the manufacturing sector is still far from racing ahead and serious doubts remain about the strength of demand for manufactured goods over the medium term, particularly once stimulative measures start being withdrawn.
(9) Doubts about Hinkley Point have deepened after a detailed report by HSBC’s energy analysts described eight key challenges to the project, which will be built by the state-backed French firm EDF and be part-financed by investment from China .
(10) The mean age of gravidae with doubtful smears is about 6 years beyond the mean age of gravidae with positive smears.
(11) I have no doubt that both the Conservative and Labour parties will maintain throughout the course of the election campaign their determination to build four submarines and 160 warheads,” he says.
(12) There is little doubt that when it opens next Thursday, One New Change will be jam-packed with City workers and tourists.
(13) We feel that they, as presented, leave serious doubt as to the validity of their conclusions.
(14) Contact guidance has been suggested to direct NC cells ventrally in the trunk, but this has been subject to doubt (see Newgreen and Erickson, 1986, Int.
(15) Although “there are serious questions and doubts in our minds over the government’s seven-day working agenda … it isn’t clear what this strike action is for and what the position of the BMA is now,” he told the Guardian.
(16) There is no doubt that people were killed quite deliberately by police officers.
(17) Other critics, even if they were unsure of the lasting relevance, were willing to give Tillmans the benefit of the doubt.
(18) We interpret this exaggerated positive attitude as an attempt to overcome inner fears, doubts and ambivalences.
(19) Another forward, Manchester United's Danny Welbeck, is a major doubt for the game with a knee complaint.
(20) Coghlin said: “There is no doubt that, as a consequence of the personalities involved, these proceedings attracted a very considerable degree of media publicity both before and, to a certain degree, subsequent to the trial.
Uncertain
Definition:
(a.) Not certain; not having certain knowledge; not assured in mind; distrustful.
(a.) Irresolute; inconsonant; variable; untrustworthy; as, an uncertain person; an uncertain breeze.
(1) However, the mechanism of the inhibitory action is still somewhat uncertain.
(2) Of course the job is not done and we will continue to remain vigilant to all risks, particularly when the global economic situation is so uncertain,” the chancellor said in a statement.
(3) The functional significance of these early changes in the nodal region is uncertain.
(4) Preservation of dopaminergic and H1 neurotransmission, probably within the blood barrier, is needed to allow the neuroendocrine transduction of cholinergic inputs, whereas the role of 5-HT neurotransmission remains uncertain.
(5) The nature of these infiltrative foci remains uncertain; however, they are unlikely to have been of neoplastic origin and may be due to interleukin-2-induced lymphocytic infiltration.
(6) Whether or not any alteration in disease progression will accrue from demonstrated local downstaging is, of course, uncertain.
(7) Similarly, it appears that acute hydronephrosis or worsening of an existing hydronephrosis has been somewhat overlooked as a possible cause of uncertain abdominal pain during pregnancy.
(8) In 11 patients, the electrophysiological mechanism remained uncertain.
(9) The nature of the cystatin C-immunoreactive substance in some of these vascular lesions is uncertain, but it might conceivably play an additional important role in the pathogenesis of brain hemorrhage in these cases.
(10) The mechanism of action is still uncertain but it is believed by some workers to be similar to that of a beta-adrenergic stimulator.
(11) Assays of drug levels in blood and of other biochemical characteristics of psychiatric patients are being proposed for clinical application, although their utility in practice remains uncertain.
(12) In 26 patients, including the two reported here, etiology was uncertain (idiopathic aneurysm of the left ventricle) in as much as malformation or an infectious disease might have been the underlying cause.
(13) Instead of inevitable defeat there is uncertain cop-out.
(14) The aetiology remains at present uncertain and therefore rational therapeutic strategies are difficult to plan.
(15) It was concluded that (1) there is a group of patients whose histories of poliomyelitis are uncertain, and (2) the lack of clear evidence for previous denervation after extensive electrodiagnostic testing is a valid means for excluding the diagnosis of postpoliomyelitis syndrome.
(16) Although approximately 24,000 adolescents were questioned, the investigations together provide an uncertain picture of the habits as these are not representative for Danish adolescents.
(17) McCall said the outlook remained uncertain: “The economic and operating environment remains uncertain, following the high levels of disruption and more recently the UK’s referendum decision to leave the EU, as well as the recent events in Turkey and Nice, which have affected consumer confidence.
(18) The significance of this event is uncertain; cleaved NGF demonstrates bioactivity and no function has been attributed to the octapeptide produced (NGF-OP; Ser-Ser-Thr-His-Pro-Val-Phe-His).
(19) While the histogenesis of these tumors remain uncertain, it is necessary to recognize that these aggressive neoplasms may occur primarily in the skin.
(20) Estimates of the number of eventual TA-AIDS cases to be seen are considerably more uncertain and require additional assumptions about the incubation distribution.