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pie in the sky

pie in the sky

10 7.5
An idea or plan that is unlikely to happen
  • idiom
  • /paɪ ɪn ðə skaɪ/
  • Informal
translation icon : castillo en el aire
  • Her plan to solve the city's traffic problems with flying cars is clearly just a pie in the sky idea.
  • pie in the sky stuff
  • pie in the sky promises
  • pie in the sky dream

I mean, I think in retrospect, that whole campaign looks like a pie in the sky kind of fairy tale.

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Examples

  • A renewables infrastructure isn't some pie-in-the-sky hippie green thing, irrespective of personal choices about body art.

    Blog text (16)
  • You'll see that it's not just pie in the sky, but a very real prospect.

    Blog text (4)
  • Well, let me tell you, it's a pie in the sky dream right now.

  • You and your pie in the sky ideas.

  • It's a pie in the sky idea.

  • I would not go so far as to say that it is pie in the sky.

    Academic text (2001)
  • Well, that may be a bit pie in the sky.

    Academic text (2001)
  • I mean, I think in retrospect, that whole campaign looks like a pie in the sky kind of fairy tale.

  • But reality has a way of interfering with futuristic pie in the sky calculations like this.

  • You cite Romney's lack of specifics and his possibly pie-in-the-sky plan to balance the budget.

    Blog text (23)

Synonyms

rainbow
vspie in the sky
  • Informal
36 8.1

A hope that is beautiful but unlikely to come true

is a practical, critical label for unlikely or impractical plans
pipe dream
vspie in the sky
  • Informal
23 6.8

A hope or plan that is not likely to happen

is an unlikely, impractical hope rather than an outright fantasy
mirage
vspie in the sky
22 7.7

An idea or hope that seems real but is not possible

is framed as impractical hope rather than a misleading appearance
unrealistic expectation
vspie in the sky
8 4.6

A belief about the future that is not likely to happen

is more idiomatic and suggests a fanciful plan rather than a formal expectation
in someone's wildest dreams
vspie in the sky
  • Informal
8 6.1

Far more than someone could ever imagine

is used for unlikely hopes but focuses on extreme surprise rather than impracticality
flight of fancy
vspie in the sky
  • Informal
7 7.4

An imaginative idea that is unlikely to be true or useful

is similar but applied more to hopes or plans, not playful ideas
nonstarter
vspie in the sky
6 6.4

An idea or plan that people reject as unlikely to work

is about impractical hopes or plans rather than formal rejection
impossible dream
vspie in the sky
4 6.8

A hope for something you cannot achieve

is more about impractical hopes than absolute, proven impossibility
moonshot
vspie in the sky
1 7.4

A very ambitious and risky project that may fail

is less about bold ambition and more about unrealistic impracticality
castle in the air
vspie in the sky
  • Informal
1 8.2

An idea or plan that is unrealistic and unlikely to happen

is used for unlikely plans but not only for idle daydreams
dim and distant dream
vspie in the sky
  • Literature
7.2

A hope that seems unlikely to come true

is used for unlikely hopes that can be more concrete or specific

Antonyms

283 3.7

Having sensible ideas about what can be achieved

How Realistic

hope
1.0
wishful thinking
  • Informal
45 4.1
pie in the sky
  • Informal
10 7.5
pipe dream
  • Informal
23 6.8

Surface Forms

Morphology

pie + in + the + sky

The idiomatic sense ‘an unlikely or impractical hope’ does not follow directly from the literal words 'pie' and 'sky' — a B1 learner who knows the constituents would more likely imagine a literal pie in the sky rather than infer an abstract notion of impossibility. Any metaphorical reading (pie = reward; sky = unreachable) requires cultural or historical knowledge and is not predictably derived from the parts, so the expression is opaque to learners without prior exposure.

Etymology

Pie in the sky comes from an old song that mocked promises of a sweet pie in the sky after people died. That's why the phrase now means a nice idea or promise that is 'unlikely' or 'unrealistic'.