en·deav·or 
(ĕn-dĕvər)
(ĕn-dĕvər)n.
1. A conscientious or concerted effort toward an end; an earnest attempt.
2. Purposeful or industrious activity; enterprise.
v. en·deav·ored, en·deav·or·ing, en·deav·ors
v.tr.
To attempt (fulfillment of a responsibility or an obligation, for example) by employment or expenditure of effort: endeavored to improve the quality of life in the inner city.
v.intr.
To work with a set or specified goal or purpose.
[Middle English endevour, from endeveren, to make an effort, from (putten) in dever, (to put oneself) in duty, make it one's duty : in, in; see IN1 + dever, duty (from Old French deveir, devoir, duty; see DEVOIR).]
en·deavor·er n.
- cooperationist
- cooperative
- cooperatively
- cooperativeness
- cooperator
- Cooper pair
- Cooper's hawk
- Cooperstown
- co-opt
- co-optation
- co-optative
- co-option
- co-optive
- co-orbital
- coordinate
- coordinate bond
- coordinated universal time
- coordinately
- coordinateness
- coordinate system
- coordinating conjunction
- coordination
- coordination compound
- coordinative
- coordinator