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endeavour

British  
/ ɪnˈdɛvə /

verb

  1. to try (to do something)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an effort to do or attain something

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of endeavour

C14: endeveren , from en- 1 + -deveren from dever duty, from Old French deveir; see devoirs

Explanation

To endeavour is to strive for something. The endeavour itself is the thing you're striving for, the enterprise or undertaking. It's a primarily British spelling of the word. The Middle English root of endeavour means to "put oneself in" or "do one's utmost," so if you endeavour to do something, you do it with earnestness and a fair amount of effort. Americans usually spell the word endeavor, but NASA named one of its space shuttles the Endeavour. Why the extra "u"? NASA was honoring the HMS Endeavour, the first ship ever used by the British explorer Captain James Cook.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

He said there must be a "collective endeavour across government, especially in relation to wastewater".

From BBC Jun. 24, 2026

David Singh, for Ashford, said he had admitted the "endeavour was his idea", and was now "taking responsibility".

From BBC Jun. 2, 2026

"I will endeavour in all I do, working constructively with the UK government, to get the best deal for Wales," he said.

From BBC May 12, 2026

At the same event, Security Minister Dan Jarvis will implore AI firms to work with the government on the "generational endeavour" to make sure AI is used to protect critical networks from attackers.

From BBC Apr. 21, 2026

At dusk the drums of calamity began; their grave, throbbing rhythm came clearly through the night, throughout the night, each beat, each tattoo, echoing the mighty impotence of our human endeavour.

From "Nectar in a Sieve" by Kamala Markandaya

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