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all by (one's) lonesome

Completely alone. My roommate left town for the weekend, so I'm here all by my lonesome.
See also: all, by, lonesome

on (one's) lonesome

Completely alone. Primarily heard in UK. My friends have all gone on holiday and left me here on my lonesome. You can't leave a boy that young on his lonesome! He needs to be supervised all the time!
See also: lonesome, on
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

all by one's lonesome

Rur. all alone; by oneself. Mary's folks went out and left her all by her lonesome.
See also: all, by, lonesome
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
"I get lonesome right in the middle of a crowd, and I get the feeling that with her whoever she may be I won't be lonesome, no matter where I'll be," he added.
The original Lonesome Dove stars Hollywood greats Robert Duvall, Tommy Lee Jones, Danny Glover, Anjelica Houston and Rick Schroder.
But consider the scoop, as it was then considered, when Liverpool Playhouse signed the actor to play Elvis Presley in Alan Bleasdale's music drama, Are You Lonesome Tonight?
I've had to change eighteen numbers over the past week--then two more yesterday." Out went such favorites as "Heartbreak Hotel" and "Are You Lonesome Tonight?" and in went several lesser-known songs and recordings by other artists such as Bill Haley and Jerry Lee Lewis.
Weaver, of Gunsmoke, McCloud and Lonesome Dove fame, is founder and president of the institute.
helveticaTote prices: 11-1 Pasternak, 16-1 Captain Scott, Monitor, Sunstreak, 20-1 Brave Reward, Dokos, Emplane, For Your Eyes Only, Happy Valentine, Kumatour, Lonesome Dude, Sugarfoot, 25-1 bar.
In a letter dated March 2, 1955, Langston Hughes wrote his longtime friend Arna Bontemps to congratulate him on the publication of Bontemps's latest children's book: "Lonesome Boy is a perfectly charming and unusual book.
For Roddy Hart and his band The Lonesome Fire, it was their third time at the helm of the Roaming Roots Revue, Celtic Connections' annual curation of music under a chosen theme.
He is not as lonesome as he looks up there, but for Randy Haines, his solo act is a relatively new thing.
@Benfogle: Sad to hear that Lonesome George, the Galapagos tortoise has died.
Summary: Johnny Depp's 'Lone Ranger' may not be so lonesome after all, as the star is made an honorary member of the Comanche Nation tribe.
The main character is a lonesome lion who is embarrassed by his unusual color.
*** LONESOME DOVE, COMPLETE COLLECTION BOX-SET (15) Available to buy pounds 59.99.
LONESOME GLORY, who became the first US-trained horse to win a race in Britain when taking a leg of the Sport of Kings series at Cheltenham in 1992, has been elected to the Racing Hall of Fame in Saratoga, writes Dan Farley.