What's the difference between doubt and illusion?

Doubt


Definition:

  • (v. i.) To waver in opinion or judgment; to be in uncertainty as to belief respecting anything; to hesitate in belief; to be undecided as to the truth of the negative or the affirmative proposition; to b e undetermined.
  • (v. i.) To suspect; to fear; to be apprehensive.
  • (v. t.) To question or hold questionable; to withhold assent to; to hesitate to believe, or to be inclined not to believe; to withhold confidence from; to distrust; as, I have heard the story, but I doubt the truth of it.
  • (v. t.) To suspect; to fear; to be apprehensive of.
  • (v. t.) To fill with fear; to affright.
  • (v. i.) A fluctuation of mind arising from defect of knowledge or evidence; uncertainty of judgment or mind; unsettled state of opinion concerning the reality of an event, or the truth of an assertion, etc.; hesitation.
  • (v. i.) Uncertainty of condition.
  • (v. i.) Suspicion; fear; apprehension; dread.
  • (v. i.) Difficulty expressed or urged for solution; point unsettled; objection.

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.

Illusion


Definition:

  • (n.) An unreal image presented to the bodily or mental vision; a deceptive appearance; a false show; mockery; hallucination.
  • (n.) Hence: Anything agreeably fascinating and charning; enchantment; witchery; glamour.
  • (n.) A sensation originated by some external object, but so modified as in any way to lead to an erroneous perception; as when the rolling of a wagon is mistaken for thunder.
  • (n.) A plain, delicate lace, usually of silk, used for veils, scarfs, dresses, etc.

Example Sentences:

  • (1) By using various colors, it is possible to tattoo a nipple-areola complex onto the breast that will have an illusion of projection.
  • (2) Apnea monitoring did not prevent, and in fact perpetrated the illusion of SIDS in this infant.
  • (3) Pope Francis’s no-longer-secret meeting in Washington DC with anti-gay activist Kim Davis, the controversial Kentucky county clerk who was briefly jailed over her refusal to issue same-sex marriage licenses in compliance with state law, leaves LGBT people with no illusions about the Pope’s stance on equal rights for us, despite his call for inclusiveness.
  • (4) Cocaine produces simple hallucinations, PCP can produce complex hallucinations analogous to a paranoid psychosis, while LSD produces a combination of hallucinations, pseudohallucinations and illusions.
  • (5) They must be kept secret because publication would destroy the illusion of a royal neutrality no one in power thinks exists any more.
  • (6) They impose the illusion of order on a chaotic life; they cement our place within and commitment to a collective.
  • (7) The preliminary experiments described here suggest that tilt aftereffects and illusions induced by projected slides of tilted real-object scenes have angular functions similar to that induced by a line grating.
  • (8) These variants, which yielded a robust illusion, included dihedral angles in place of the arrowheads of the classical pattern.
  • (9) During vibration of the depressor muscles with the mandible in its rest position the subjects underestimated an opening movement, but fixation of the mandible caused no illusions of movement.
  • (10) Stimuli were circular beams of light projected on screens (Delboef type of illusion).
  • (11) The director John Hillcoat and I were under no illusions.
  • (12) When the shaft is shortened and reaches neither of the vertices of the two pairs of wings, a reversed Müller-Lyer illusion is observed: a shaft between inward-pointing wings appears to be longer than a shaft between the outward-pointing wings.
  • (13) An illusion is something done one way that looks the other, like if you put a mirror in front of a pencil so the pencil looks like it's somewhere else.
  • (14) The subjects were asked to relate dreams, thoughts, or other mental illusions experienced during G-LOC episodes.
  • (15) While Yarmolenko stayed quiet, Stepanenko left no illusions as to his interpretation.
  • (16) The count of publications on geometric-optical illusions and the bibliography of extant books on the topic are brought up to date.
  • (17) The illusion is of watching a prima ballerina dancing only for you.
  • (18) Is Sisi’s UK visit going to fill my car with gas?’ A lot of people are increasingly disenchanted with the government, simply because it is failing to live up to its own illusions of grandeur.” Among the disenchanted are thousands of workers in the critical textiles sector who are striking over pay and conditions.
  • (19) Four experiments were conducted to investigate the role of "large" squares on the occurrence of assimilation and contrast in the Baldwin illusion.
  • (20) It creates a dangerous illusion that simply by reducing sugar intake, one can eradicate obesity.