› to formally query whether or not something is genuine or authorized, or whether a person has the authority or right to try and do one thing:
› to inform a person in a border or gate to stand continue to and say their name and explanations for getting there
Competing and contending (non-sporting) cat chancer near-operate Level of competition competitive competitiveness contest entry go in for sth joust sustain with the Joneses idiom look in your laurels idiom matchup a single-upmanship pit sb/sth against sb/sth race snap at sb's heels idiom sq. try out for sth vying See more success »
physiologists, philosophical psychologists, and in addition physicists established by themselves in that interval was that of constructing invisible forces visible.
.. idiom oppugn qualm reserve sceptic sceptically scepticism self-question skeptical scent a rat idiom suspicion suspicious suss See far more effects »
in responding to this kind of requests is in figuring out the comparative Advantages and challenges of various stem cell transplant strategies.
From Cambridge English Corpus Even so, Then again, certifying that a random k-tuple program has reduced discrepancy is apparently an algorithmic challenge
Notwithstanding the value of the challenge, around the nineteenth of May well he acquired a sealed packet containing the subsequent beautifully laconic reply:
gantlet, gauntlet - to offer or take a challenge; "threw down the gauntlet"; "took up the gauntlet"
It’s quick sufficient to crank out higher education graduates, but a very good education and learning ought to truly challenge them.
With back-laid ears she seemed straight in the eyes of Tarzan of the Challenge Apes and sounded her fierce, shrill challenge.
eight. Immunology To induce or Appraise an immune response in (an organism) by administering a particular antigen to which it has been sensitized.
phone - challenge (someone) to generate fantastic on a press release; demand with or censure for an offense; "He warrants being called on that"
Suspecting & questioning call connect with into problem idiom cynical dispute question doubting Thomas fisking I'd prefer to see.