how long is a piece of string
how
haʊ
haw
long
lɒng
long
is
ɪz
iz
a
ə
ē
piece
pi:s
pis
of
əv
ēv
string
strɪng
string

Definition & Meaning of "how long is a piece of string"in English

how long is a piece of string
01

used to say that it is impossible to answer a question concerning the size, length, or amount of something 

Dialectbritish flagBritish
how long is a piece of string definition and meaning
Humorous
Idiom
Informal

What is the origin of the idiom "how long is a piece of string" and when to use it?

The phrase "how long is a piece of string" is a humorous idiom used to highlight the vagueness or impossibility of providing a precise answer to a question. The origin of this expression is not precisely documented, but it likely developed as a playful way of emphasizing the difficulty in measuring or determining something that lacks clear parameters.

Examples
How long will the renovation take? How long is a piece of string? 
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