Definition of BUM (original) (raw)

1

a

: of poor quality or nature

b

: not valid or deserved

c

: not pleasant or enjoyable

2

: affected or disabled by damage or injury

intransitive verb

1

: loaf

bummed around the house all day

2

: to spend time unemployed and often wandering —often used with around

spent a couple of months bumming around Mexico

1

informal + disapproving : someone who lives off others and avoids work : sponge

2

: someone who performs a function poorly

The fans called the umpire a bum.

3

: someone whose time is devoted to a recreational activity

4

informal + usually disparaging : a person who has no established residence and wanders from place to place without lawful or visible means of support

bums sleeping on park benches

Synonyms of bum

Examples of bum in a Sentence

Noun (1)

I decided to get off my bum and get some exercise Adjective

that was bum advice that you got from that website Verb (1)

spent most of the summer just bumming around the house Noun (2)

if you expect an allowance, you have to do some chores and stop being such a bum I feel sorry for bums and occasionally give them money

Recent Examples on the Web

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

History buffs, avid hikers, music lovers, wine aficionados, and beach bums will all find a town to love in the Old Dominion. —Brandee Gruener, Southern Living, 9 May 2026 Squinting through the flatulent fog, Absalom manages to return fire, planting a red-hot iron on Nicholas’s bum. —Literary Hub, 4 May 2026

On March 17, a video obtained by TMZ showed LaBeouf in a hotel lobby in Rome, Italy, wearing only his underwear and trying to bum a light for a cigarette. —Jack Smart, PEOPLE, 1 Apr. 2026 Spring cleaning bumming you out? —K. Thor Jensen, PC Magazine, 31 Mar. 2026 See All Example Sentences for bum

Word History

Etymology

Noun (1)

Middle English bom

Adjective

perhaps from bum entry 4

Verb (1)

probably back-formation from bummer entry 1

Noun (2)

probably short for bummer entry 1

Noun (3)

perhaps from bum entry 3

Verb (2)

probably back-formation from bummer entry 2

First Known Use

Noun (1)

14th century, in the meaning defined above

Adjective

1878, in the meaning defined at sense 1a

Verb (1)

1863, in the meaning defined at intransitive sense 1

Noun (2)

1864, in the meaning defined at sense 1

Noun (3)

1863, in the meaning defined above

Verb (2)

1970, in the meaning defined above

Time Traveler

The first known use of bum was in the 14th century

Browse Nearby Words

Cite this Entry

“Bum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bum. Accessed 13 May. 2026.

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Merriam-Webster unabridged