difficult to accomplish; demanding considerable mental effort and skill; "the arduous work of preparing a dictionary"
characterized by toilsome effort to the point of exhaustion; especially physical effort; "worked their arduous way up the mining valley"; "a grueling campaign"; "hard labor"; "heavy work"; "heavy going"; "spent many laborious hours on the project"; "set a punishing pace"
taxing to the utmost; testing powers of endurance; "his final, straining burst of speed"; "a strenuous task"; "your willingness after these six arduous days to remain here"- F.D.Roosevelt
Israeli statesman (born in Russia) who (as prime minister of Israel) negotiated a peace treaty with Anwar Sadat (then the president of Egypt) (1913-1992)
set in motion, cause to start; "The U.S. started a war in the Middle East"; "The Iraqis began hostilities"; "begin a new chapter in your life"
begin to speak or say; "Now listen, friends," he began
begin to speak, understand, read, and write a language; "She began Russian at an early age"; "We started French in fourth grade"
achieve or accomplish in the least degree, usually used in the negative; "This economic measure doesn't even begin to deal with the problem of inflation"; "You cannot even begin to understand the problem we had to deal with during the war"
begin an event that is implied and limited by the nature or inherent function of the direct object; "begin a cigar"; "She started the soup while it was still hot"; "We started physics in 10th grade"
have a beginning, in a temporal, spatial, or evaluative sense; "The DMZ begins right over the hill"; "The second movement begins after the Allegro"; "Prices for these homes start at $250,000"
have a beginning characterized in some specified way; "The novel begins with a murder"; "My property begins with the three maple trees"; "Her day begins with a workout"; "The semester begins with a convocation ceremony"
have a beginning, of a temporal event; "WW II began in 1939 when Hitler marched into Poland"; "The company's Asia tour begins next month"
be the first item or point, constitute the beginning or start, come first in a series; "The number `one' begins the sequence"; "A terrible murder begins the novel"; "The convocation ceremony officially begins the semester"
difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge; "the professor's lectures were so abstruse that students tended to avoid them"; "a deep metaphysical theory"; "some recondite problem in historiography"
requiring more than usually expected or thought due; especially great patience and effort and skill; "found the job very demanding"; "a baby can be so demanding"