bonjour (interj.)

"money or other benefit given as a premium or extra pay to reward or encourage work," 1773, a phrase in "Stock Exchange Latin" [Weekley], taken as "a good thing," from Latin bonus "good" (adj.), perhaps originally "useful, efficient, working," from Proto-Italic *dw-eno- "good," probably a suffixed form of PIE root *deu- (2) "to do, perform; show favor."

The correct noun form would be bonum. Specifically as "extra dividend paid to shareholders from surplus profits" from 1808. In U.S. history the bonus army was the name given to the tens of thousands of World War I veterans and followers who marched on Washington, D.C., in 1932 demanding early redemption of their service bonus certificates (which carried a maximum value of $625).

c. 1200, "a defined course of traveling; one's path in life," from Old French journée "a day's length; day's work or travel" (12c.), from Vulgar Latin *diurnum "day," noun use of neuter of Latin diurnus "of one day" (from dies "day," from PIE root *dyeu- "to shine"). The French fem, suffix -ée, from Latin -ata, was joined to nouns in French to make nouns expressing the quantity contained in the original noun, and thus also relations of times (soirée, matinée, année) or objects produced.

Meaning "act of traveling by land or sea" is c. 1300. In Middle English it also meant "a day" (c. 1400); a day's work (mid-14c.); "distance traveled in one day" (mid-13c.), and as recently as Johnson (1755) the primary sense was still "the travel of a day." From the Vulgar Latin word also come Spanish jornada, Italian giornata.

Proto-Indo-European root meaning "to do, perform; show favor, revere."

It forms all or part of: beatific; beatify; beatitude; Beatrice; beau; beauty; Bella; belle; beldam; belladonna; belvedere; bene-; benedict; Benedictine; benediction; benefactor; beneficiary; benefice; beneficence; benefit; benevolent; benign; bonanza; bonbon; bonhomie; bonito; bonjour; bonny; bonus; boon (adj.); bounty; debonair; embellish.

It is the hypothetical source of/evidence for its existence is provided by: Latin bene (adv.) "well, in the right way, honorably, properly," bonus "good," bellus "handsome, fine, pretty," and possibly beatus "blessed," beare "to make blessed."