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
make an oral contract or agreement in the verbal form of question and answer that is necessary to give it legal force
specify as a condition or requirement in a contract or agreement; make an express demand or provision in an agreement; "The will stipulates that she can live in the house for the rest of her life"; "The contract stipulates the dates of the payments"
give a guarantee or promise of; "They stipulated to release all the prisoners"
move to and fro; "The shy student lingered in the corner"
be undecided about something; waver between conflicting positions or courses of action; "He oscillates between accepting the new position and retirement"