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like a demon

like a demon

4 7.4
To do something with great energy and effort
  • idiom
translation icon : como un demonio
  • Melvin runs like a demon.
  • work like a demon
  • fight like a demon
  • walk like a demon

The Queenie united the painter, took up the oars and set off rowing like a demon.

Examples

  • - Samson's been driving us like a demon.

  • Josh is in eleventh gear on his ten-speed pedaling like a demon for the Becks' house.

    Fiction book (2001)
  • Over the next year, he pursued his medical studies like a demon.

  • I work like a demon in the gym, though.

    Blog text (24)
  • You notice how he's suddenly riding like a demon in some races?

    Fiction book (1990)
  • Eustace had to swim like a demon before rescuing himself.

    Fiction book (1998)
  • She swept like a demon, and the ties of her house dress flew from side to side.

    Fiction book (1995)
  • He studied for his exams like a demon, staying up late every night to revise.

  • She ran like a demon to catch the bus before it left the station.

  • The team played like demons, showing remarkable energy and determination throughout the match.

Synonyms

fiercely
vslike a demon
81 3.7

In a very strong way that shows energy or anger

is intensely driven with determined purpose rather than only force
like hell
vslike a demon
  • NSFW
75 7.9

Happening very quickly, with great effort or very strongly

is controlled fierce intent rather than casual intensity
with a vengeance
vslike a demon
  • Informal
23 6.7

Very strongly and with a lot of energy

is driven by determined purpose rather than mere forceful vigor
feverishly
vslike a demon
13 5.1

In a way that shows very fast, nervous energy because of strong excitement or worry

is fierce purposeful energy rather than feverish unhealthy excitement
like mad
vslike a demon
  • Informal
13 8.1

Act very quickly and with great effort

is genuine fierce determination rather than informal emphasis
ferociously
vslike a demon
12 5.6

In a very strong and angry way

is determined and forceful rather than simply violent
like the devil
vslike a demon
  • Informal
8 8.2

Very quickly and with great energy

is fiercely determined rather than merely colloquial intensity
energetically
vslike a demon
8 3.0

In a lively and eager way

is fiercer and more determined rather than simply energetic
ardently
vslike a demon
7 4.9

In a way that shows strong feeling and great enthusiasm

is fiercely determined action rather than mainly passionate feeling
like gangbusters
vslike a demon
  • Informal
6 8.1

Very quickly and with great success

is fierce determined energy rather than mainly forceful success
zealously
vslike a demon
5 5.4

Doing something with great energy and strong interest

is fiercer determined force rather than devoted enthusiasm
rabidly
vslike a demon
4 7.3

Showing very strong, often angry feelings that seem unreasonable

is fierce determination rather than uncontrolled fanaticism
something fierce
vslike a demon
  • Informal
4 8.6

To a very great degree

is fierce determination rather than a general intensifier
manically
vslike a demon
2 7.2

With very high energy and little control

is determined intensity rather than erratic frenzied excitement
frenetically
vslike a demon
1 7.0

Very quickly and in a worried or excited way

is focused fierce determination rather than hurried frantic energy
lustily
vslike a demon
1 4.7

With strong, healthy energy and enthusiasm

is fierce determined energy rather than hearty robust vigor
like a man possessed
vslike a demon
  • Informal
1 7.6

Act with very strong, urgent energy and full focus

is driven by fierce determination rather than uncontrolled urgency
like sin
vslike a demon
  • Informal
1 9.2

To do something very quickly or with great effort

is true fierce determination rather than casual intensifying speech
like a dog in the hunt
vslike a demon
  • Informal
9.6

Very eager and determined to get something

is fiercer and more forceful rather than only eager pursuit
like a buzzsaw
vslike a demon
  • US
8.4

To act quickly and forcefully without stopping

is determined in purpose while this stresses relentless efficient force
demoniacally
vslike a demon
  • Archaic
9.8

In a wild, frenzied way as if possessed by an evil spirit

is driven by fierce determination rather than merely frenzied agitation
demonically
vslike a demon
  • Literature
8.4

In a way that shows great energy, speed, or skill

is human determination rather than supernatural or uncanny force
like all possessed
vslike a demon
  • Informal
9.6

With very strong, uncontrolled energy and effort

is focused fierce determination rather than general frenzy
like Jehu
vslike a demon
  • Archaic
9.9

In a wild, fast way with little control

is determinedly fierce rather than simply reckless energy
ragingly
vslike a demon
7.0

In a very strong, angry, or violent way

is determined force with purpose rather than raw fury
rambunctiously
vslike a demon
7.5

In a noisy, energetic way that is hard to control

is fierce determined energy rather than noisy uncontrolled play
like merry hell
vslike a demon
  • NSFW
9.5

In a very energetic and excited way

is determined fierceness rather than colloquial emphatic intensity
fervidly
vslike a demon
8.2

With strong, excited feeling for something

is determined fierce energy rather than chiefly passionate intensity
fierily
vslike a demon
7.4

In a way that shows strong feeling and energy

is determined fierce action rather than emotional intensity
like a bull at a gate
vslike a demon
  • UK
9.2

Doing something suddenly and forcefully without thinking because you are very eager

is deliberately fierce and determined rather than sudden impatience

Antonyms

Showing no interest or care

In a way that shows no interest or energy

How Energetic

like a demon
4 7.4
fiercely
81 3.7
briskly
24 3.5

Surface Forms

like a demon positive

Morphology

like + a + demon

The simile marker 'like' plus 'demon' yields a manner comparison ("in the manner of a demon"), so the phrase conveys intense, relentless energy as a metaphorical extension of the noun. This is not purely compositional: the intensified, idiomatic sense relies on recognizing the cultural/metaphorical use of 'demon', so a B1 learner who only knows the literal words may not reliably infer the exact meaning without prior exposure.

Etymology

Like a demon comes from the old image of a demon giving a person wild, extra energy, as if they were driven to move very fast. So, to do something like a demon means to do it with 'great energy' or 'strong determination'.