(n.) An invitation to engage in a contest or controversy of any kind; a defiance; specifically, a summons to fight a duel; also, the letter or message conveying the summons.
(n.) The act of a sentry in halting any one who appears at his post, and demanding the countersign.
(n.) A claim or demand.
(n.) The opening and crying of hounds at first finding the scent of their game.
(n.) An exception to a juror or to a member of a court martial, coupled with a demand that he should be held incompetent to act; the claim of a party that a certain person or persons shall not sit in trial upon him or his cause.
(n.) An exception to a person as not legally qualified to vote. The challenge must be made when the ballot is offered.
(n.) To call to a contest of any kind; to call to answer; to defy.
(n.) To call, invite, or summon to answer for an offense by personal combat.
(n.) To claim as due; to demand as a right.
(n.) To censure; to blame.
(n.) To question or demand the countersign from (one who attempts to pass the lines); as, the sentinel challenged us, with "Who comes there?"
(n.) To take exception to; question; as, to challenge the accuracy of a statement or of a quotation.
(n.) To object to or take exception to, as to a juror, or member of a court.
(n.) To object to the reception of the vote of, as on the ground that the person in not qualified as a voter.
(v. i.) To assert a right; to claim a place.
Example Sentences:
(1) Bronchial challenge caused an immediate asthmatic response.
(2) When chimeric animals were subjected to a lethal challenge of endotoxin, their response was markedly altered by the transferred lymphoid cells.
(3) This frees the student to experience the excitement and challenge of learning and the joy of helping people.
(4) The degree of increase in Meth responsiveness elicited by the initial provocation is a major factor in determining the airway response to a subsequent HS challenge.
(5) Intranasal challenge of allergic subjects with the allergen to which they are sensitive rapidly produces sneezing, rhinorrhea, and airway obstruction.
(6) Matthias Müller, VW’s chief executive, said: “In light of the wide range of challenges we are currently facing, we are satisfied overall with the start we have made to what will undoubtedly be a demanding fiscal year 2016.
(7) In 1935, Einstein challenged the prevailing interpretation of quantum theory.
(8) A shrinking populace is perhaps a greater challenge than any problems with Russia.
(9) Intraperitoneal injection of indomethacin to pretreated animals resulted in increased levels of IL-1 and TNF and decreased levels of PGE2 following challenge with E. coli.
(10) Think of Nelson Mandela – there is a determination, an unwillingness to bend in the face of challenges, that earns you respect and makes people look to you for guidance.
(11) The children's pulse, pulse rate variability, and blood pressure were then measured at rest and during a challenging situation.
(12) At first it looked as though the winger might have shown too much of the ball to the defence, yet he managed to gain a crucial last touch to nudge it past Phil Jones and into the path of Jerome, who slipped Chris Smalling’s attempt at a covering tackle and held off Michael Carrick’s challenge to place a shot past an exposed De Gea.
(13) The results support the notion that mediator lymphocytes circulate in tumor immunized rats in a noncytotoxic state, specifically recognize tumor cells at a challenge site, and mediate induction of effector cells locally.
(14) The role of blood acetylcholinesterase in moderating the effects of organophosphate challenge in rats was tested.
(15) In the first trial to investigate the effect of tick control, significant improvements in liveweight gain (LWG) occurred only in periods of medium to high challenge with adult Amblyomma variegatum.
(16) The SNT and the I-ELISA indicated that the pigs responded to vaccination and challenge.
(17) When caffeine evokes a contraction, and only then, crayfish muscle fibers become refractory to a second challenge with caffeine for up to 20 min in the standard saline (5 mM K(o)).
(18) This observation seriously challenges the hypothesis that SCE cancellation results as a consequence of persistence of the lesions induced by these agents.
(19) Injection of about four ImD 50 of vaccine intracerebrally produced a local immunity, resulting in an immediate kill of challenge organisms given 14 days later.
(20) There was no correlation between anti-TNP-precipitating antibody titer after sensitization and the ability to respond to challenge by hapten-heterologous carrier.
Unchallenging
Definition:
Example Sentences:
(1) "At the same time, however, we cannot allow one man's untrue version of what happened to stand unchallenged," he said.
(2) These late paintings were deemed too perfect, not "badly done" enough, perhaps, and unchallenging: there was in them a marked absence of painterly lavishness.
(3) Rebels moved unchallenged along a road littered with evidence of the air campaign and the speed of their enemies' retreat.
(4) Migration inhibition (MI) assays using peritoneal and spleen cells from immunized but unchallenged mice showed no parallel correlation with percent mortality.
(5) Although unlicensed in the UK, because it uses satellites operated from Luxembourg, not unlike pirate radio, it is allowed to start unchallenged.
(6) Dame Julie Mellor has accused the boards of hospitals of adding to patients' pain and letting poor care continue unchallenged by doing too little to spot and stop serious failings.
(7) In public discourse, to broadcast these ideas and leave them unchallenged is effectively to endorse them.
(8) In the context of what he called the "normalisation of war", Bacevich argued that unchallenged, expanding American military superiority encouraged the use of force, accustomed "the collective mindset of the officer corps" to ideas of dominance, glorified warfare and the warrior and advanced the concept of "the moral superiority of the soldier" over the civilian.
(9) While caricatures of welfare dependents reign unchallenged, pressing practical questions about how poor people can make ends meet are ducked.
(10) The lie that the credit crunch was caused by excessive public spending , rather than spectacular managerial private sector failure, continues to go largely unchallenged.
(11) Does that give him an unchallenged right to set a new agenda for how a man talks to a woman?"
(12) There was no checking their charges into space – they needed snuffing out – while the impressive Busquets collected unchallenged in central areas and shifted the ball on, either up to Messi or across the field from one side to the other.
(13) But the letter, passed to the Guardian, claims the BBC increasingly treats Migration Watch as "neutral analysts of UK migration patterns", adding that its opinions often go unchallenged on BBC news programmes.
(14) Weight-induced lesions showed a mixed inflammatory infiltrate, primarily polymorphonuclear (neutrophils and eosinophils), whereas the unchallenged skin sites were normal.
(15) Guinness also wielded glacial fierceness and terror with unchallengeable authority.
(16) These comments must not go unchallenged and have to be investigated by the FA.” Whelan’s apology had attempted to clarify his feelings on Jewish people, but he appeared to remain unsure if “chink” was an offensive term.
(17) Many students saw anesthesiology as limited in scope and unchallenging and indicated that they did not select anesthesiology because it entails insufficient primary patient care.
(18) Next time, though, Fox’s friends will be onscreen unchallenged, and they won’t even have to try.
(19) Ruth Davidson, the Scottish Conservative leader, said: "We now have the European commission reaffirming what everyone knows – that a separate Scotland cannot simply waltz into the EU unchallenged.
(20) An additional 20 chicks from each of the four groups were maintained as unchallenged controls.