Simple past tense and past participle of endeavor.(verb)
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Use "endeavored" in a sentence
"a peasant's son, established an important and gratifying fact -- that our native country, if without a literature at the time, was at least capable of appreciating, and willing to foster the humble exertions of such as endeavored to create one."
"When in 1948 Robert Motherwell, Harold Rosenberg, and John Cage endeavored to produce an ambitious little magazine of their own devoted to the emerging American vanguard, they called it Possibilities."
"If I have had to lean on others in difficult times -- and I have -- it has eroded by self-esteem and I have therefore endeavored to get back on my own feet rather than develop, G-d forbid, a stultifying and painful dependency."