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.