Meanings
big mo1
alternative Big Mo
- USinformalLarge-scale momentum.
"The Big Mo is behind the McCain-Lieberman bill, and the next steps by the White House are still murky," said Representative Jane Harman of California, the ranking Democrat on the House Intelligence Committee, who attended the White House meeting.
2004 September 9, Elisabeth Bumiller, Philip Shenon, “Bush Now Backs Budget Powers in New Spy Post”, in The New York Times1 more example
The "Maury" show is, to quote a recent issue of Entertainment Weekly, this season's "biggest success story" in syndicated daytime television. The show's ratings are up some 19 percent since last year, and it now occasionally outpoints the popular "Rosie O'Donnell Show" in the same time slot here in New York. This "daytime yakker" has got the "big mo," they say.
2000 July 16, Jeff Macgregor, “Saving the World, One Sexy Teen at a Time”, in The New York Times
Big Mo2
- Alternative letter-case form of big mo.
Origin
Clipping of big momentum. Famously used by George H. W. Bush (1924–2018) during his quest for the Republican nomination to run for president of the United States in 1980.
Full word history & related roots →Cite this entry
big mo. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/big%20mo
“big mo.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/big%20mo. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “big mo,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/big%20mo.
Source: big mo on Wiktionary, CC BY-SA 4.0.