Note: these 'words' (valid or invalid) are all the permutations of the word bum. These words are obtained by scrambling the letters in bum.
Definitions and meaning of bum
Attested since the 1300s, as Middle Englishbom (found in John Trevisa's 1387 Translation of the 'Polychronicon' of Ranulph Higden, "his bom is oute"), of uncertain origin. Sometimes suggested to a shortening of botme, botom, bottum(“bottom”), but this is contradicted by the fact that bottom is not attested in reference to the buttocks until the late 1700s. Suggested by some old and modern references to be onomatopoeic. Compare also Old Irish, Scottish Gaelicbun(“base, bottom”).
Okay, everyone sit on your bum and try and touch your toes.
For quotations of use of this term, see Citations:bum.
(informal, rare) The anus.
In Canada, bum is considered the most appropriate term when speaking to young children, as in Everyone please sit on your bum and we'll read a story. In the United States, bum is not often used in this sense (though this may vary from dialect to dialect) except in conscious imitation of British English. The term butt is the most common term in North America except in professional contexts such as medical, legal, and scientific where buttocks is generally used or gluteus maximus, gluteus medius, etc. for the muscles specifically. Glutes is often used in sports medicine and bodybuilding. Ass (originally a dialectal variant of arse) is considered vulgar in North America, whereas backside, behind, and bottom are considered to be non-specific terms.
In British English, bottom would be the most appropriate term when speaking to young children. In the first half of the twentieth century bum was sometimes considered vulgar, in the second half as slang, but is now considered simply informal.
(buttocks or anus):arse(UK, Irish, Australian, New Zealand, Canada), ass (North America), backside, behind, bottom, butt (North America), heinie (North America), fanny (North America), tush (North America), tushie (North America)
(buttocks specifically): butt cheeks (North America), buttocks (technical), nether cheek, arsecheek, asscheek, cheeks, glutes (muscles), gluteus maximus (primary muscles)
(anus specifically): anus (technical), arsehole (UK, Irish, Australian, New Zealand), asshole (North America)
See also Thesaurus:anus
bum (third-person singular simple presentbums, present participlebumming, simple past and past participlebummed)
(Britain, transitive, colloquial) To sodomize; to engage in anal sex.
(Britain) An expression of annoyance.
2010, Jill Mansell, Sheer Mischief:
Maxine tried hers. 'Oh bum,' she said crossly. 'The sugar isn't sugar. It's salt.'
1864, back-formation from bummer, from GermanBummler(“loafer”), from bummeln(“loaf”)
(US, Canada, colloquial, sometimes derogatory) A homeless person, usually a man.
(US, Canada, Australia, colloquial) A lazy, incompetent, or annoying person, usually a man.
Fred is becoming a bum - he's not even bothering to work more than once a month.
That mechanic's a bum - he couldn't fix a yo-yo.
That guy keeps interrupting the concert. Throw the bum out!
1987, The Pogues - Fairytale of New York
You're a bum
You're a punk
You're an old slut on junk
Lying there almost dead on a drip in that bed
1988, Michael Weikath, "Keeper of the Seven Keys", Helloween, Keeper of the Seven Keys: Part II.
(US, Canada, Australia, colloquial, sports) A player or racer who often performs poorly.
Trade him to another team, he's a bum!
2001, Laura Hillenbrand - Seabiscuit: An American Legend
Seabiscuit, wrote another reporter, “was a hero in California and a pretty fair sort of horse in the midwest. In the east, however, he was just a ‘bumʼ”