The Collaborative International Dictionary
To do one's endeavor
Endeavor \En*deav"or\, n. [Written also endeavour.] An exertion of physical or intellectual strength toward the attainment of an object; a systematic or continuous attempt; an effort; a trial.
To employ all my endeavor to obey you.
--Sir P.
Sidney.
To do one's endeavor, to do one's duty; to put forth
strenuous efforts to attain an object; -- a phrase derived
from the Middle English phrase ``to do one's dever''
(duty). ``Mr. Prynne proceeded to show he had done
endeavor to prepare his answer.''
--Fuller.
Syn: Essay; trial; effort; exertion. See Attempt.