Armed with new research (PDF), proponents are challenging that conventional wisdom.
"If I may interject, Judge, they find YOU difficult and challenging, more than your colleagues," Graham countered.
And that makes for a meandering, challenging, non-escapist viewing.
Certainly they are growing, but none of them come close to challenging the American economy.
Bringing together the best of the extremes, he ensured that jazz remained both approachable and challenging.
All progress is initiated by challenging current concepts, and executed by supplanting existing institutions.
There are those who have put themselves to the pains of challenging this statement of mine.
The forces of vice, evil, and disease are challenging us to marshal our strength and give them battle.
She was addressing them directly to him, and her uplifted finger was challenging him.
This is rather intended as the challenging speech of a debate, not as a complete essay on the existence of Deity.
early 14c., "something one can be accused of, a fault, blemish;" mid-14c., "false accusation, malicious charge; accusation of wrong-doing," also "act of laying claim" (to something), from Anglo-French chalenge, Old French chalonge "calumny, slander; demand, opposition," in legal use, "accusation, claim, dispute," from Anglo-French chalengier, Old French chalongier "to accuse, to dispute" (see challenge (v.)). Accusatory connotations died out 17c. Meanings "an objection" in law, etc.; "a calling to fight" are from mid-15c. Meaning "difficult task" is from 1954.
c.1200, "to rebuke," from Old French chalongier "complain, protest; haggle, quibble," from Vulgar Latin calumniare "to accuse falsely," from Latin calumniari "to accuse falsely, misrepresent, slander," from calumnia "trickery" (see calumny).
From late 13c. as "to object to, take exception to;" c.1300 as "to accuse," especially "to accuse falsely," also "to call to account;" late 14c. as "to call to fight." Also used in Middle English with sense "claim, take to oneself." Related: Challenged; challenging.