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on earth

on earth

117 2.8
You say it after a question word to show surprise
  • idiom
  • Informal
translation icon : demonios
  • What on earth is she doing?

And I was like, why on earth would he not call me?

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Examples

  • How on earth did you manage such a feat?

  • And why on earth would I want to do that?

  • So the key question was, what on earth is this object?

  • And I was like, why on earth would he not call me?

  • So why are you here on earth, Michael?

  • Like why on earth are we OK with that?

  • But how on earth would we get good at that?

  • And he said, why on earth is it that expensive?

  • So what on earth am I going to do?

  • What on earth is going on?

Synonyms

what the hell
vson earth
  • NSFW
347 8.9

An angry or surprised question showing you do not believe something

is used with question words to add surprise or disbelief
what the heck
vson earth
  • Informal
90 8.9

A short cry to show surprise, confusion, disbelief, or casual acceptance

is used with question words to add surprise or disbelief
why in the world
vson earth
1 8.1

Words people say to show strong surprise or shock

is used with question words to add surprise or disbelief
in heaven's name
vson earth
  • Informal
1 7.3

People say it to show surprise, anger, or a strong need for an answer

is used with question words to add surprise or disbelief
what the what
vson earth
  • Informal
9.9

A short phrase people say to show surprise or confusion

is used with question words to add surprise or disbelief
in thunderation
vson earth
  • Archaic
9.9

Said to show surprise or doubt

is used with question words to add surprise or disbelief

How Emphatic

good God
  • Informal
35 8.2
in God's name
  • Informal
1 7.9
for heaven's sake
  • Informal
45 7.6
on earth
  • Informal
117 2.8

Surface Forms

on earth positive

Morphology

on + Earth

The literal composition 'on' + 'Earth' yields a locative meaning (someone or something being on the world), which can be extended to 'in the world' and thus gives a clue to an emphatic or incredulous sense. However, the use as a pragmatic intensifier in questions is an idiomatic, non-literal extension that a B1 learner would not reliably predict without exposure, so it is only partially transparent.

Etymology

On earth comes from the image of the whole world: on the earth means 'in the whole world', so asking 'How on earth...?' is like asking 'How in the whole world...?'. That's why we use it to show 'surprise' or 'disbelief'.