All 7 Uses

endeavor
in
The Pit and the Pendulum
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Amid frequent and thoughtful endeavors to remember; amid earnest struggles to regather some token of the state of seeming nothingness into which my soul had lapsed, there have been moments when I have dreamed of success; there have been brief, very brief periods when I have conjured up remembrances which the lucid reason of a later epoch assures me could have had reference only to that condition of seeming unconsciousness.†

endeavors = attempts; or things attempted
Then, very suddenly, thought, and shuddering terror, and earnest endeavor to comprehend my true state.†
Then entire forgetfulness of all that followed; of all that a later day and much earnestness of endeavor have enabled me vaguely to recall.†
At length, however, I took courage, and did not hesitate to step firmly; endeavoring to cross in as direct a line as possible.†

endeavoring = trying or attempting
But my soul took a wild interest in trifles, and I busied myself in endeavors to account for the error I had committed in my measurement.†

endeavors = attempts; or things attempted
I endeavored, but of course in vain, to look through the aperture.†

endeavored = tried or attempted
...endeavoured to appreciate or understand what was taking place.
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endeavoured = tried or attempted

unconventional spelling: This is a British spelling. Americans use endeavored.

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