What's the difference between must and ought?

Must


Definition:

  • (v. i. / auxiliary) To be obliged; to be necessitated; -- expressing either physical or moral necessity; as, a man must eat for nourishment; we must submit to the laws.
  • (v. i. / auxiliary) To be morally required; to be necessary or essential to a certain quality, character, end, or result; as, he must reconsider the matter; he must have been insane.
  • (n.) The expressed juice of the grape, or other fruit, before fermentation.
  • (n.) Mustiness.
  • (v. t. & i.) To make musty; to become musty.

Example Sentences:

  • (1) Such a signal must be due to a small ferromagnetic crystal formed when the nerve is subjected to pressure, such as that due to mechanical injury.
  • (2) The catheter must be meticulously fixed to the skin to avoid its movement.
  • (3) The significance of minor increases in the serum creatinine level must be recognized, so that modifications of drug therapy can be made and correction of possibly life-threatening electrolyte imbalances can be undertaken.
  • (4) One must be suspicious of any gingival lesion, particulary if there is a sudden onset of bleeding or hyperplasia.
  • (5) For assessment of clinical status, investigators must rely on the use of standardized instruments for patient self-reporting of fatigue, mood disturbance, functional status, sleep disorder, global well-being, and pain.
  • (6) To this figure an additional 250,000 older workers must be added, who are no longer registered as unemployed but nevertheless would be interested in finding another job.
  • (7) They had learned through hard experience what Frederick Douglass once taught -- that freedom is not given, it must be won, through struggle and discipline, persistence and faith.
  • (8) Careful attention must be given to antibiotic choice as well as the dose and duration of therapy.
  • (9) Before carrier vaccines are applied, these risks must be thoroughly evaluated case-by-case.
  • (10) This suggests that molars do not maintain a fixed relationship to incisors over time, and extreme care must be taken to standardize an experiment to a specific body weight when using this method.
  • (11) For retrospective action to be taken, and an FA charge to follow, the decision of the panel must be unanimous.” The match between the sides ended in acrimony and two City red cards.
  • (12) Although esmolol may be used as a primary hypotensive agent, the potential for marked myocardial depression must be recognized.
  • (13) After the diagnosis of a soft-tissue injury (sprain, strain, or contusion) has been made, treatment must include an initial 24- to 48-hour period of RICE.
  • (14) Since the plasmid-cured strains did not contain DNA sequences homologous to plasmid DNA, the gene for the free-inclusion protein must be encoded in the chromosome.
  • (15) If women psychiatrists are to fill some of the positions in Departments of Psychiatry, which will fall vacant over the next decade, much more attention must be paid to eliminating or diminishing the multiple obstacles for women who chose a career in academic psychiatry.
  • (16) Research must continue to determine the optimal regimen that suppresses testosterone activity with the least amount of toxicity.
  • (17) Renal arteriography is therefore alone capable of answering two primordial questions: "Must surgery be undertaken and when operating, what surgical tactics to adopt".
  • (18) Which must make yesterday's jobs figures doubly alarming for the coalition.
  • (19) It is commonly assumed that the visual resolution limit must be equal to or less than the Nyquist frequency of the cone mosaic.
  • (20) In assessing damaged nets and curtains it must be recognised that anything less than the best vector control may have no appreciable impact on holoendemic malaria.

Ought


Definition:

  • (n. & adv.) See Aught.
  • (imp., p. p., or auxiliary) Was or were under obligation to pay; owed.
  • (imp., p. p., or auxiliary) Owned; possessed.
  • (imp., p. p., or auxiliary) To be bound in duty or by moral obligation.
  • (imp., p. p., or auxiliary) To be necessary, fit, becoming, or expedient; to behoove; -- in this sense formerly sometimes used impersonally or without a subject expressed.
  • () of Owe

Example Sentences:

  • (1) "I think that we've got to treat our kids well, but I don't think we ought to say there's no place ever for smacks.
  • (2) We recommend, that the term vitelline macular degeneration ought to be used intead of Best's macular degeneration.
  • (3) Van Gaal argued that Huth had grabbed Fellaini’s considerable hair and claimed it ought to have been a penalty but the Football Association’s disciplinary department will surely take action.
  • (4) Authors have previously published April 1988 a lecture where they criticize the bad denomination "passed coma" full of ambiguity for public mind, to which "brain death" ought to be preferred.
  • (5) It has been said that hyperfractionation radiotherapy might be a better treatment for a neuroblastoma than the conventional therapy, however, we would suggest that a modification of the radiotherapy schedule ought to depend on the type of cells, because there are cells which show broad shoulder curves and a strong capacity for repair.
  • (6) They, together with Rosicky, form the group who feel they ought to be getting more playing time but the opportunity to impress passed them by as Arsenal felt the force of Southampton’s endeavour and solidity.
  • (7) Alli almost scored with one of his first touches, denied by Martin Skrtel’s saving clearance, but England really ought to have created more clear chances given the amount of time they had on the ball.
  • (8) Dealing with the special problem of pregnancy in women with the biological disorder, one ought to consider the literature on the subject, showing the large occurrence of ante- and post-natal accidents.
  • (9) The authors suggest that there ought to be limits on the extent to which social and economic considerations in the provision of radiological services should be allowed to compromise sound principles in the radiation protection of the patient.
  • (10) Because it ought to be crystal clear what the BBC has agreed to do as part of its public service remit.
  • (11) There is going to be an urgent government inquiry with recommendations and, frankly the ABC ought to take some very strong action straightaway.” When asked whose heads should roll, Abbott ended the press conference and walked away.
  • (12) No true evangelical ought to be tempted to give such tales any credence whatsoever, no matter how popular they become,” Johnson wrote.
  • (13) On the face of it, Huhne's guilty plea last month on a charge of perverting the course of justice over a 2003 speeding case ought to have killed the Liberal Democrats' hopes of holding the seat.
  • (14) The paper proposes that in post-behaviouristic and post-phenomenological times an integration of frames of reference, designs and methodologies ought to be attempted, notwithstanding serious dissonances, disagreements, and professions-bound interests.
  • (15) Big tumors leading to displacement of intestinal or biliary organs ought to be removed in toto; this allows complete histological work up and exclusion of malignancy, and it does prevent recurrence of the tumor as well.
  • (16) Department of Health officials have made it clear that A&Es ought to share information with police, but a spokesperson admitted it simply did not know how many hospitals were operating the model.
  • (17) It’s more to do with the politics within the Coalition rather than what I think the community wants, which is to get on with this issue to be dealt with where it ought to be dealt with – and I think that’s the fed parliament.” Asked if his party would pass the plebiscite enabling legislation, Xenophon replied: “Right now it’s a no.
  • (18) In practice, there are now two or three classes of shareholders, and the only ones that ought to have the privileges of dividends and decision-making about the future of the companies they are said to own ought to be those that hold on to your shares for the longer term.
  • (19) If the party’s senior members cannot grasp this simple fact, then perhaps they ought to replace the word “Labour” in the party’s name – or cross the floor and join the Conservatives?
  • (20) We insist that its citizens ought to be more virtuous versions of ourselves; when they fall short, our rage is terrible.