endeavor

Etymology

The verb is from Middle English endeveren (“to make an effort”); the noun is from Middle English endevour, from the verb. Endeveren is from (putten) in dever (“(to put oneself) in duty”), from in + dever (“duty”), partially translating Middle French (se mettre) en devoir (de faire) (“(to make it) one's duty (to do), to endeavour (to do)”) (from Old French devoir, deveir (“duty”)).

noun

1. A sincere attempt; a determined or assiduous effort towards a specific goal; assiduous or persistent activity.

verb

1. (obsolete) To exert oneself.
2. (intransitive) To attempt through application of effort (to do something); to try strenuously.
3. (obsolete, transitive) To attempt (something).
4. To work with purpose.
   He draws eclectically on studies of baboons, descriptive anthropological accounts of hunter-gatherer societies and, in a few cases, the fossil record. With this biological framework in place, Corning endeavors to show that the capitalist system as currently practiced in the United States and elsewhere is manifestly unfair. 2012 March-April, John T. Jost, “Social Justice: Is It in Our Nature (and Our Future)?”, in American Scientist, volume 100, number 2, archived from the original on 2012-02-13, page 162