"When I began writing there was a very small community of Canadian writers and little attention was paid by the world. Now Canadian writers are read, admired and respected around the globe," Munro said in a statement issued by her publisher, Alfred A. Knopf. She said she hopes the Nobel "fosters further interest in all Canadian writers" and "brings further recognition to the short story form."
She has long been an international ambassador for the short story, proof that the narrative arc and depth of characterisation expected from a novel can be realised in just 30 to 40 pages.
Critics and peers have praised her in every way a writer can be praised: the precision of her language; the perfection of detail; the surprise and logic of her storytelling; the graceful, seamless shifts of moods; the intimacy with every shade of human behaviour.
Her stories are usually set in Ontario, her home province. Among her best-known is The Bear Came Over the Mountain, about a woman who begins losing her memory and agrees with her husband that she should be put in a nursing home. Canadian actress-director Sarah Polley adapted the story into the 2006 film Away from Her, starring Julie Christie.
The narrative begins in a relatively tender, traditional mood. But we soon learn that the husband has been unfaithful in the past and didn't always regret it - "What he felt was mainly a gigantic increase in well-being." The wife, meanwhile, has fallen for a man at the nursing home.
In the story Dimensions, Munro introduces a chambermaid named Doree, who needs to take three buses for a visit to a "facility" outside Clinton, Ontario. Munro explains that Doree is happy in her work, that she has been told she is "young and decent looking" and that her picture was once in the newspaper, in the days when her spiked blonde hair was wavy and brown.
Dimensions begins in close-up, then steadily pulls back. With every page, the story darkens, and terrifies. The "facility" is an institution where Doree's husband is held. Doree's picture was in the paper because her husband murdered their children.
"In all the time since what had happened, any thought of the children had been something to get rid of, pull out immediately like a knife in the throat," Munro writes.
Munro won a National Book Critics Circle prize in 1998 for The Love of a Good Woman and was a finalist in 2001 for Hateship, Friendship, Courtship, Loveship, Marriage. She is also a three-time winner of the Governor General's prize, Canada's highest literary honour.
Any further awards are likely to honorary. She told Canada's National Post in June that she was "probably not going to write anymore".
Her most recent collection, Dear Life, came out in 2012.
Starting in the 1960s, when she was first published, she has often contrasted her youth in Wingham, a conservative town west of Toronto, and her life after the social upheaval of the '60s. Munro herself lived out the fears, and celebrated the liberation, of the educated housewives in Betty Friedan's The Feminine Mystique.
In an interview with The Associated Press in 2003, she described the '60s as "wonderful".
"Because, having been born in 1931, I was a little old, but not too old, and women like me after a couple of years were wearing miniskirts and prancing around," she said.
The daughter of a fox farmer and a teacher, she was born Alice Anne Laidlaw, a literary person in a nonliterary town, concealing her ambition like a forbidden passion.
She received a scholarship to study at the University of Western Ontario, majoring in journalism, and was still an undergraduate when she sold a story to CBC radio in Canada. She dropped out to marry a fellow student, James Munro, had three children and became a full-time housewife. By her early 30s, she was so confined, frightened and depressed that she could barely write a full sentence.
Her good fortune was to open a bookstore with her husband, in 1963. Stimulated by everything from the conversation of adults to simply filling out invoices, she saw her narrative talents resurface but her marriage collapse.
Her first collection, Dance of the Happy Shades, came out in 1968 and won the Governor General's prize.
At least in her work, Munro is among the least political of Nobel winners, who in recent years have included Latin America's Mario Vargas Llosa and British novelist Doris Lessing. In 2003, she told the AP she was not inspired by current events but by memories, anecdotes, gossip. The stories themselves have few topical references or famous names.
"I don't do a lot of indicators where you can tell what time it is, because that would impinge on me too much. Somebody writing about now would have to have Iraq in it. They need to have the right music and right celebrities and right style of clothes," she said.
"In ordinary life I am a fairly active, political person. I have opinions and join clubs. But I always want to see what happens with people underneath; it interests me more."
- AP