名詞 endeavor:

1. a purposeful or industrious undertaking (especially one that requires effort or boldness)
   同義詞：enterprise, endeavour
2. earnest and conscientious activity intended to do or accomplish something
   同義詞：attempt, effort, endeavour, try

動詞 endeavor:

1. attempt by employing effort
   同義詞：endeavour, strive

1. How can we endeavor to prolong the brevity of human life?
   我們怎樣才能延長短促的人生？
2. An effort or endeavor to realize an aim.
   奮斗為達到目標而作的努力或嘗試
3. A specified structure or zone into or over which players endeavor to advance a ball or puck.
   球門某一特定的結構或區(qū)域，從中運動員努力進球或冰球
4. Please make every endeavor to be early.
   請盡量早點兒。
5. The man endeavored to please his beloved wife.
   那人盡量使他深愛的妻子快樂。

en.deav.or

n.（名詞）
A conscientious or concerted effort toward an end; an earnest attempt.
努力，盡力：為達到目標而所做的盡職的、一致的努力；熱切的嘗試
Purposeful or industrious activity; enterprise.See Synonyms at effort
企圖，進取心：有目的的、勤勉刻苦的行動；進取心參見 effort
v.（動詞）
en.deav.ored,en.deav.or.ing,en.deav.ors
v.tr.（及物動詞）
To attempt (fulfillment of a responsibility or an obligation, for example) by employment or expenditure of effort:
奮力，努力：通過運用或消耗努力而試圖（例如履行一項職責或一份義務）：
例句：
endeavored to improve the quality of life in the inner city.
努力改善城市內(nèi)的生活品質(zhì)

v.intr.（不及物動詞）
To work with a set or specified goal or purpose.
企圖，謀求：帶有確定目標或指定目的而工作

來源：
Middle English endevour
中古英語 endevour
from endeveren [to make an effort]
源自 endeveren [做努力，盡力]
from (putten) in dever [(to put oneself) in duty, make it one`s duty]
源自 (putten) in dever [（將自己）置于職責之中，使其擔負某人職責]
in [in] * see in
in [在…中] *參見 in
dever [duty] from Old French deveir, devoir [duty] * see devoir
dever [職責，義務] 源自 古法語 deveir, devoir [職責] *參見 devoir

【引伸】
endeav.orer
n.（名詞）