Try Our Apps


Famous Last Words


[buh-nan-zuh, boh-] /bəˈnæn zə, boʊ-/
a rich mass of ore, as found in mining.
a source of great and sudden wealth or luck; a spectacular windfall:
The play proved to be a bonanza for its lucky backers.
Origin of bonanza
1835-45, Americanism; < Spanish: literally, smooth sea (hence, good luck, rich vein of ore), nasalized variant of Medieval Latin bonacia, equivalent to Latin bon(us) good + (mal)acia calm sea < Greek malakía softness (malak(ós) soft + -ia -ia) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for bonanza
Contemporary Examples
Historical Examples
  • After spending the wealth acquired from the bonanza of Tasco, he started off in search of new adventures and a new fortune.

    Mexico and its Religion Robert A. Wilson
  • Staked twenty-two on bonanza and sold out yesterday to the Syndicate.

    Colorado Jim George Goodchild
  • Pentfield went back to his bonanza mine, which was many times more dreary than before, and faced resolutely into the long winter.

    The Faith of Men Jack London
  • Why, man, the old mine must have been a bonanza, if it all panned out stuff like this!

    The Copper Princess Kirk Munroe
  • The first stream which flows into the river from the southward is the bonanza, some twenty-five miles long.

    Klondike Nuggets E. S. Ellis
British Dictionary definitions for bonanza


a source, usually sudden and unexpected, of luck or wealth
(US & Canadian) a mine or vein rich in ore
Word Origin
C19: from Spanish, literally: calm sea, hence, good luck, from Medieval Latin bonacia, from Latin bonus good + malacia dead calm, from Greek malakia softness
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
Cite This Source
Word Origin and History for bonanza

1844, American English, from Spanish bonanza "a rich lode," originally "fair weather at sea, prosperity," from Vulgar Latin *bonacia, from Latin bonus "good" (see bene-).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for bonanza

Some English speakers likely know this word

Word Value for bonanza

Scrabble Words With Friends

Nearby words for bonanza