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tail off

B2 neutral inseparable intransitive
In simple words

Slowly get smaller, quieter, or less common over time

Literal meaning: A tail that trails off into the distance — the image of something diminishing like a receding tail.

Meanings

1 B2 idiomatic neutral

(Of a quantity, level, or amount) To gradually decrease or decline over a period of time

"Sales were strong in January but began to tail off by March."

"Donations tend to tail off after the initial publicity fades."

— The Guardian, 2015
Grammar: inseparable
2 B2 idiomatic neutral

(Of sound, speech, or enthusiasm) To gradually become quieter, weaker, or less intense

"His explanation tailed off into silence when he realized he had no idea what he was talking about."

Grammar: inseparable
Usage notes

Common in journalism, business reporting, and everyday speech. Used for statistics, sound, performance, enthusiasm, and interest. The image is of a tail trailing off into nothing. Often used in sports and economics reporting.

Commonly used with

sales interest attendance voice support production

Forms

Base
tail off
I/you/we/they
3rd person
tails off
he/she/it
Past simple
tailed off
yesterday
Past participle
tailed off
have + pp
-ing form
tailing off
continuous

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