from Wiktionary, Creative Commons Attribution/Share-Alike License.
superlativeform of chummy: most chummy.
Sorry, no etymologies found.
An offensive line, by the mandates of its position and the unofficial rules of football-playing, is a team's chummiest unit.
The Band of Brothers 2010
Everybody's a pal in lovable old Washington, and they are at their chummiest when they are crossing party lines and getting together on issues in the pragmatic and postpartisan way that all enlightened people know they should.
Gangs of D.C. 2009
So we ain't the chummiest trio that could be got together.
Torchy, Private Sec. Sewell Ford 1907
And he was in the scrub ere they decided to take him at his madcap word, and let his blood be on the chuckle-head of the new-chummiest new chum that ever came out after the rain!
In it occurs this sentence: "The college girl is grammatical in speech, but she has the jolliest, chummiest jargon of slang that ever rolled from under a pink tongue."
Polite vendor execs used to call it "coopetition" -- the state of tech industry affairs whereby the fiercest of rivals could be the chummiest of partners depending on the circumstances and the market they're chasing.
Good news for film fans ahead, and bad news for ABC, who’s broadcasting the event until 2014: The New York Times reports, “The Academy of Motion Picture Arts and Sciences, once the chummiest club in show business, is becoming more artsy and indie-minded just as much of the Hollywood establishment hoped to make it more commercial.”
I didn’t really care if the Dolphins won the Nobel Prize for Literature, but as a well-designed artificial human I had several authentic-sounding prepared remarks on the subject, which seemed to satisfy Chutsky, and he chattered on in the chummiest way possible.
We know we have the prettiest girls and chummiest fellows in town, and we're all right. "
The Young Seigneur Or, Nation-Making Wilfrid Ch��teauclair
"Still, that didn't prevent them from being the chummiest of mortals on the tennis court and in the billiard-room.
The Toys of Peace, and other papers 1870-1916 Saki 1893