bum

noun (1)
\ˈbəm \

Definition of bum 

(Entry 1 of 6)

: buttocks fell down on his bum

bum

adjective

Definition of bum (Entry 2 of 6)

1a : of poor quality or nature bum advice

b : not valid or deserved writing a bum check

c : not pleasant or enjoyable a bum trip

2 : affected or disabled by damage or injury has a bum knee

bum

verb (1)
bummed; bumming

Definition of bum (Entry 3 of 6)

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

transitive verb

: to obtain by asking or begging : cadge bum a cigarette

bum

noun (2)

Definition of bum (Entry 4 of 6)

1a : one who sponges (see sponge entry 2 sense 2) off others and avoids work He's a lazy bum.

b : one who performs a function poorly called the umpire a bum

c : one whose time is devoted to a recreational activity a beach bum ski bums

2 : vagrant, tramp bums sleeping on park benches

on the bum

: with no settled residence or means of support

bum

noun (3)

Definition of bum (Entry 5 of 6)

: a drinking spree : bender a 2-day bum

bum

verb (2)
bummed; bumming; bums

Definition of bum (Entry 6 of 6)

transitive verb

US, informal

: disappoint, depress usually used with out The news really bummed me out.

Keep scrolling for more

Examples of bum in a Sentence

Adjective

that was bum advice that you got from that chat room

First Known Use of bum

Noun (1)

14th century, in the meaning defined above

Adjective

1859, 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 1a

Noun (3)

1863, in the meaning defined above

Verb (2)

1973, in the meaning defined above

History and Etymology for bum

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

Keep scrolling for more

Learn More about bum

Statistics for bum

Look-up Popularity

Time Traveler for bum

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

See more words from the same century

Keep scrolling for more

More Definitions for bum

bum

adjective

English Language Learners Definition of bum

: of bad quality

: not legally acceptable : not valid

: injured or damaged

bum

noun
\ˈbəm \

Kids Definition of bum

 (Entry 1 of 2)

1 : a person who avoids work

bum

verb
bummed; bumming

Kids Definition of bum (Entry 2 of 2)

: to obtain by asking or begging Can I bum a dollar from you?

Keep scrolling for more

More from Merriam-Webster on bum

See words that rhyme with bum

Thesaurus: All synonyms and antonyms for bum

Spanish Central: Translation of bum

Britannica.com: Encyclopedia article about bum

Comments on bum

What made you want to look up bum? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a private place of worship

Get Word of the Day daily email!

Test Your Vocabulary

Difficult Vocab Quiz

  • the-education-of-achilles-eugne-delacroix
  • Which is a synonym of discomfit?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!