# doo

/ˈdu/ (US)

Source: https://englishreference.com/word/doo
Updated: 2026-06-20

## Senses

### 1. singing sound

interjection · CEFR B2

a sound used in music when the singer uses nonsense syllables instead of words.

For teachers: a nonsense syllable used in scat singing or vocal jazz to mimic the sound of an instrument.

- The backup singers sang 'doo-doo-doo' behind the lead vocalist.
- The arrangement required the vocalists to perform a series of complex 'doo' syllables to emulate a walking bass line.

### 2. waste

noun · CEFR B2 · Informal

a childish word for solid waste from the body, especially from a dog.

For teachers: a juvenile or euphemistic term for excrement, most frequently applied to domestic animals.

- Watch out so you don't step in the dog doo on the grass.
- The park's new signage reminds owners that failing to clear up dog doo will result in a significant fine.

## Examples

- The singer finished the song with a soft 'doo-doo-doo'.
- The backing vocalists provided a rhythmic foundation by repeating a simple 'doo' pattern behind the lead singer.
- In jazz improvisation, a vocalist might substitute complex lyrics for a series of 'doo' and 'dah' syllables to focus the listener's attention entirely on the melodic and rhythmic phrasing.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.