exclamation of defiance or dismissal, from 1812. Extended form yah-boo by 1910.
"eucharistic service," Middle English messe, masse, from Old English mæsse, from Vulgar Latin *messa "eucharistic service," literally "dismissal," from Late Latin missa "dismissal," fem. past participle of mittere "to let go, send" (see mission).
Probably so called from the concluding words of the service, Ite, missa est, "Go, (the prayer) has been sent," or "Go, it is the dismissal." The Latin word sometimes was glossed in Old English as sendnes "send-ness." Meaning "musical setting of certain parts of the Catholic (or Anglican) liturgy" is by 1590s.
also nerts, 1932, originally American English college slang, colloquial or euphemistic pronunciation of nuts as a slang retort of defiance or dismissal (1931).
1540s, "dismissal after settlement of business," from dispatch (v.). Meaning "speed, haste" is from 1570s. Sense of "a written message sent speedily" is first attested 1580s; that of "a sending off or away" is from c. 1600.