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
not tractable; difficult to manage or mold; "an intractable disposition"; "intractable pain"; "the most intractable issue of our era"; "intractable metal"
exist over a prolonged period of time; "The bad weather continued for two more weeks"
continue talking; "I know it's hard," he continued, "but there is no choice"; "carry on--pretend we are not in the room"
keep or maintain in unaltered condition; cause to remain or last; "preserve the peace in the family"; "continue the family tradition"; "Carry on the old traditions"
continue a certain state, condition, or activity; "Keep on working!"; "We continued to work into the night"; "Keep smiling"; "We went on working until well past midnight"
continue after an interruption; "The demonstration continued after a break for lunch"
do something repeatedly and showing no intention to stop; "We continued our research into the cause of the illness"; "The landlord persists in asking us to move"
an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom; "he could not suppress a yawn"; "the yawning in the audience told him it was time to stop"; "he apologized for his oscitancy"
utter a yawn, as from lack of oxygen or when one is tired; "The child yawned during the long performance"
a disposition to exhibit uncontrolled anger; "his temper was well known to all his employees"
the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking
a characteristic (habitual or relatively temporary) state of feeling; "whether he praised or cursed me depended on his temper at the time"; "he was in a bad humor"
make more temperate, acceptable, or suitable by adding something else; moderate; "she tempered her criticism"
adjust the pitch (of pianos)
harden by reheating and cooling in oil; "temper steel"
electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds; "I talked to him on the telephone"