Simple past tense and past participle of endeavour.(verb)
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Use "endeavoured" in a sentence
"The family they were in endeavoured to conceal it as much as possible, but as it had gotten some vent in the discourse of the neighbourhood, the Secretaries of State got knowledge of it; and concerning themselves to inquire about it, in order to be certain of the truth, two physicians and a surgeon were ordered to go to the house and make inspection."
"During the negotiations for the Treaty of Ghent, 1814, the British negotiators again endeavoured to have the 49th parallel to the Rockies accepted as the boundary, but as the proposal was coupled with a stipulation for free access to, and navigation of the Mississippi, the United States negotiators refused to incorporate these articles in the Treaty and the matter therefore was postponed."
"Captain Bunting endeavoured to save himself by darting up the face of the precipice on his left, but the foot-hold was bad, and the bear proved about as nimble as himself, compelling him to leap down again and make for the nearest tree."