A sudden happening that brings good fortune (as a sudden opportunity to make money).

synonyms: bonanza, boom, bunce, gold rush, gravy, manna from heaven, windfall.

Roget 734: prosperity, welfare, well-being; affluence etc. (wealth) 803; success etc. 731; thrift, roaring trade; good fortune, smiles of fortune; blessings, godsend.    luck; good luck, run of luck; sunshine; fair weather, fair wind; palmy days, bright days, halcyon days; piping times, tide, flood, high tide.    Saturnia regna [Lat.], Saturnian age; golden time, golden age; bed of roses, fat city [Coll.]; fat of the land, milk and honey, loaves and fishes.    made man, lucky dog, enfant gate [Fr.], spoiled child of fortune.    upstart, parvenu, skipjack^†, mushroom.    ... show more

Roget 618: good, benefit, advantage; improvement etc. 658; greatest good, supreme good; interest, service, behoof, behalf; weal; main chance, summum bonum [Lat.], common weal; consummation devoutly to be wished;" gain, boot; profit, harvest.    boon etc. (gift) 784; good turn; blessing; world of good; piece of good luck [Fr.], piece of good fortune [Fr.]; nuts, prize, windfall, godsend, waif, treasure-trove.    good fortune etc. (prosperity) 734; happiness etc. 827.    [Source of good] goodness etc. 648; utility etc. 644; remedy etc. 662; pleasure giving etc. 829.    ... show more

Dutch: godsgeschenk, saus, buitenkans, buitenkansje, explosie, kaan
Polish: manna z nieba