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to puff up

to puff up

2 4.4
To make something larger or more full, for example by filling it with air
  • phrasal verb
  • /pʌf ʌp/
translation icon : hinchar
  • Bessie feels all puffed up like bread dough rising.
  • feathers puffed up
  • puffed up the pillow
  • body was puffed up

All right, once more take a deep breath, close your mouth and puff up your cheeks.

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Examples

  • After combing her fingers through it and shaking her head, her hair puffed up hugely.

    Fiction book (1999)
  • Foods that contain fiber are hard to digest and cause gas that puffs up your stomach.

    Blog text (32)
  • Though I will try to roll it out a bit thinner next time because it really puffed up.

    Blog text (15)
  • All right, once more take a deep breath, close your mouth and puff up your cheeks.

  • The bird's breast was somewhat puffed up, the tiny feathers apparently ruffled.

    Fiction book (2001)
  • Her belly was puffed up, and her chest fluttered in regular wingbeats as the respirator fed her air.

    Fiction book (1995)
  • A heavy-duty weight lifter, his whole body was puffed up as if he were wearing inflatable life vests under his clothes.

    Fiction book (1995)
  • She ran water over a shriveled orange sponge and smiled as it puffed up before her.

    Fiction book (1993)
  • He could feel his sinuses starting to puff up as the liquids in his body shifted in response to weightlessness.

    Fiction book (2001)
  • As the heat increased, the pastries began to puff up, creating a light and airy texture.

Synonyms

to swell
vsto puff up
117 3.2

To become larger often by pressure or by soaking in water

adds the idea of inflation or filling with air as one cause
to inflate
vsto puff up
44 2.9

To fill something with air so it becomes larger and round

includes that action but also other causes of enlargement like fluid
to balloon
vsto puff up
21 4.7

To increase quickly in size or amount

can be slower or less dramatic, not only rapid large increases
to pop out
vsto puff up
21 3.1

To come out quickly from a surface or container

is more general, including slow or gentle enlargement without suddenness
to puff
vsto puff up
20 4.1

To swell or make part of the body larger

refers more broadly to any enlarging by air, liquid, or feeling
to bloat
vsto puff up
19 4.9

To become swollen because of gas or fluid

is broader and also includes gentle inflation or proud expansion
to distend
vsto puff up
12 8.2

To swell because of pressure inside, for example a stomach or a balloon

is less technical and includes air, liquid, or emotional causes
to blow up
vsto puff up
7 2.7

To swell or become larger suddenly

can be slower or caused by air, liquid, or emotion rather than suddenness
to bulge
vsto puff up
7 2.9

To swell so that part of something sticks out

focuses more on overall enlargement, not only visible protrusion
to puff out
vsto puff up
5 3.5

To make something larger by filling with air or pride

is broader, covering swelling from many causes beyond air filling
to plump
vsto puff up
5 3.8

To make someone or something fuller and rounder

can also mean natural swelling from internal pressure or emotion
to bulge out
vsto puff up
3 3.7

To stick out in a round shape, like a pocket or balloon

covers swelling generally, not only outward protrusion
to swell up
vsto puff up
3 3.2

Become larger and rounder because of pressure inside, injury, or a strong feeling

also covers non-physical expansion such as emotional puffing up
to bulk
vsto puff up
1 5.4

To stick out or swell in a visible way

is more about making larger by filling or emotion, not only shape
to plump up
vsto puff up
1 4.5

To make a pillow or cushion fuller by fluffing it

is broader, including filling with air or liquid as well
to blimp out
vsto puff up
  • Informal
1 9.2

To become much larger, often by filling with air

is more neutral and covers both quick and slow forms of swelling
to plump out
vsto puff up
  • UK
6.1

To make someone or something rounder and fuller

is broader, allowing inflation by air or internal swelling too
to intumesce
vsto puff up
  • Specialized
9.9

To swell and become larger when heated or when it soaks up water

is less technical and includes casual causes like air or emotion

Antonyms

18 3.1

To let air out of something so it becomes smaller or loses its shape

How Inflated

to distend
12 8.2
to puff up
2 4.4
to swell
117 3.2
to expand
805 2.5
to enlarge
70 3.0

Surface Forms

puff up infinitive
puffed up past
puffed up past participle
puffing up present participle
puffs up third person singular

Morphology

puff + up

The meaning 'to make or become swollen/expanded' follows directly from combining 'puff' (to swell or bulge) with the particle 'up' (indicating increase or raising). This compositional verb + particle pattern is common and cross-linguistically transparent, so a B1 learner who knows both constituents can reliably infer the MWE meaning.

Etymology

Puff up comes from the simple image of blowing air into something so it becomes larger, like using a pump or a frog that puffs its body up. So it means to make something bigger or to become swollen, whether with air, numbers, or strong feeling.