What's the difference between lest and unless?

Lest


Definition:

  • (v. i.) To listen.
  • (n.) Lust; desire; pleasure.
  • (a.) Last; least.
  • (a.) For fear that; that . . . not; in order that . . . not.
  • (a.) That (without the negative particle); -- after certain expressions denoting fear or apprehension.

Example Sentences:

  • (1) The sexual rehabilitation of such patients is vital and must be done sensitively lest one's own concepts of "adequate sexuality" be imposed.
  • (2) But lest the duchess feel overlooked, the end section of the show featured long, pale-blue bias-cut crepe dresses with more of a charity gala feel; and knee-length silk crepe dresses with black grosgrain belts seemed princess friendly.
  • (3) Worse, the CFL contains mercury, which according to the EU's own regulations cannot be discarded in ordinary waste, lest the mercury leach into the water supply.
  • (4) And lest there be any remaining doubt, a forensic expert on maggots – such people do exist – testified that the theory of "semen-destroying maggots" was balderdash.
  • (5) Special care in the management of so-called 'chronic Lyme disease' is crucial lest the clinician prescribes prolonged or unending courses of antibiotics for such noninfectious problems.
  • (6) "The story is an extrapolation of what Mary Shelley did" explains writer Kevin Grevioux, lest there be any doubt.
  • (7) Loop sigmoid colostomy employing a stapling device and catheter irrigation of the distal segment is less time-consuming and has lest potential for contamination than the standard double-barrel colostomy.
  • (8) "Lest any holier-than-thou activists and politicians from other parties should forget, this is not just a Lib Dem issue, it is one that confronts women in all parties and in all professions.
  • (9) Whistleblowers with dual citizenship who speak out on Australia’s national security – including those involved in allegations that Timor-Leste’s cabinet room was bugged – could face having their citizenship revoked under proposed laws.
  • (10) You might have read a couple of articles in fashion magazines of late attempting to big up the DD look, no doubt with references to denim's "timelessness", "1950s teenage sense of freedom" and, lest we forget, "Americana".
  • (11) His film, The Angels' Share, a larky whisky heist, was screened with English as well as French subtitles at the festival, lest the Glaswegian accents prove a barrier for non-Scots.
  • (12) Article 6 of the EU treaty could not be clearer: “The union is founded on the principles of liberty, democracy, respect for human rights and fundamental freedoms, and the rule of law, principles which are common to the member states.” Lest this be regarded as mere rhetoric, Lord Bingham, the former senior law lord and widely regarded as the most outstanding British judge in the late 20th century, wrote in his book The Rule of Law (p67): “The European Commission has consistently treated democratisation, the rule of law, respect for human rights and good governance as inseparably linked.” This is why, today, we can work anywhere in the EU, have health cover throughout, bring back as much booze in the back of the van as we like, travel on cheap EU-based airlines (with the right to claim compensation for any delay), buy the villa in Marbella, and say what we like – and we can do all of these things with our rights fully protected by the law, just as if we were in the UK.
  • (13) Dahl’s heroine, Sophie, is a lonely young girl plucked from her bed in an orphanage by the titular behemoth, and carried off to Giant Land, his home, lest she alert the normal world to the presence of giants.
  • (14) A spokeswoman for the AFP did not confirm the particular section of the referral, but said in a statement: “On 13 December 2013, the Australian federal police received a referral from the Australian Security Intelligence Organisation relating to an allegation a former Australian intelligence officer disclosed information relating to operational activity in Timor-Leste.
  • (15) However, the author points out that these demonstration projects should be evaluated lest they continue to operate on the basis of rhetoric rather than fact.
  • (16) Since the clinical identification of these autoantigens often relies exclusively on size determination by Western blotting, we have characterized the commonly occurring fragments of histidyl-tRNA synthetase lest they confuse such identification.
  • (17) Lest we forget, Maradona only really got going in the quarter-finals.
  • (18) So, lest we are to be ruled solely by sociopaths and Blair's robot children, we should give them all a Bunbury option: a "Michael Green", under whose name to exercise all the human complexity for which modern politics cannot currently find room.
  • (19) Australia has made fresh promises limiting how it might use documents at the heart of a dispute with Timor-Leste , attempting to weaken the case for the international court of justice to order the sensitive material be surrendered.
  • (20) Lest there have been any remaining doubt, Donald Trump has confirmed a bully now resides in the White House.

Unless


Definition:

  • (conj.) Upon any less condition than (the fact or thing stated in the sentence or clause which follows); if not; supposing that not; if it be not; were it not that; except; as, we shall fail unless we are industrious.

Example Sentences:

  • (1) E-RFC enriched for T lymphocytes and depleted of macrophages synthesized considerable DNA in response to stimulation with PHA, but were unable to produce significant bone resorbing activity in tissue culture unless macrophages were re-added to the E-RFC.
  • (2) The UK's standard position on ICC indictees is to avoid all contact unless "essential".
  • (3) More evil than Clocky , the alarm clock that rolls away when you reach out to silence it, or the Puzzle Alarm , which makes you complete a simple puzzle before it'll go quiet, the Money Shredding Alarm Clock methodically destroys your cash unless you rouse yourself.
  • (4) S-lactic dehydrogenase (s-LDH), SGOT, and s-alkaline phosphatase were found to be too unspecific to indicate liver metastases unless all three tests were normal or abnormal.
  • (5) I never accuse a student of plagiarizing unless I have proof, almost always in the form of sources easily found by Googling a few choice phrases.
  • (6) #Tigers #Athletics @HunterFelt October 11, 2013 David Lengel (@LengelDavid) @HunterFelt Unless you're Yoenis Cespedes of course!
  • (7) In January a similar group of MPs warned of a threat to Cameron in 2014 unless he improves the Tories' standing.
  • (8) Unless you are part of some Unite-esque scheme to join up as part of a grand revolutionary plan, why would you bother shelling out for a membership card?
  • (9) The problem is basically one of differentiating a correctable metabolic disorder from a lesion that can be fatal unless surgically removed.
  • (10) Urinary Hg excretion was variable during the first 24 h after HgCl2 injection and tended to be higher with higher dosage unless the animals became anuric early on.
  • (11) Fred Goodwin was an accountant and no one ever accused the former chief executive of RBS of consuming mind-alterating substances – unless you count over-inhaling his own ego.
  • (12) Earlier this week the Obama administration said it would veto the bill unless major amendments were made.
  • (13) Thus neither the presence of changes in RS-T segment or T wave nor the absence of QRS changes are mandatory for the diagnosis of SEMI; this invalidates the common assumption that the diagnosis is not justified unless these conditions are met.
  • (14) Environmental campaigners had been apprehensive about the chances of the Senate ratifying a new international treaty – a successor to the Kyoto protocol – to combat global warming unless a consensus had already been reached on Capitol Hill.
  • (15) Make Quinn stay with B613 I think it would be difficult to bring her back to the fold at Pope and Associates (unless they’re playing the long con and her infiltration of B613 is part of the plan), but her anger would be well utilized against her former coworkers.
  • (16) Indications for operation must be strict, for unless there are specific signs and symptoms of appendiceal disease, appendectomy will often be of no benefit.
  • (17) This figure suggests that, unless there are substantial stretches of free DNA, the polyoma nucleoprotein complex contains about 26 nucleosomes.
  • (18) We are going to see a sharp fall unless sellers hold the sector up by making aggressive offers.
  • (19) An abscess of a lingual tonsil should be drained under general anesthesia, and lingual thyroid should be treated conservatively unless it produces obstructive symptoms.
  • (20) Unless psychic rehabilitation is undertaken in tandem with physical rehabilitation, a spinal cord-injured patient is likely to become an unhappy social recluse or denizen of a chronic care facility, rather than an independent productive member of his community.

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