Synonyms for Endeavor (same or very similar meaning)
WordNet sense 1 (attempt by employing effort):
strive, endeavour
WordNet sense 2 (a purposeful or industrious undertaking (especially one that requires effort or boldness)):
enterprise
WordNet sense 3 (earnest and conscientious activity intended to do or accomplish something):
attempt, effort, try
From the ODE community, based on WordNet
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