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to filter

to filter

138 3.0
To pass something through a device that removes unwanted parts
  • verb
  • /ˈfɪltər/
translation icon : filtrar
  • Everyone was busy stuffing backpacks, filtering water, or laying ground cloths.
  • filter water
  • filter light
  • filter out noise

You have people online and then we filter people in where you are.

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Examples

  • Let's filter out all the noise we picked up along the way.

  • Then, those successes will filter to other places and begin to grow with increasing speed.

    Academic text (1991)
  • So then we just filter based on that.

  • All we gotta do is filter the air.

  • Lewis, can you filter the Naughty List by location?

  • Information from the outside world is filtering in more than the regime ever thought would be possible.

    Academic text (2008)
  • It filters out pollutants.

  • We need to filter the water to remove any impurities before drinking.

  • To improve our study environment, we should filter out distractions and focus on our tasks.

  • She used a coffee machine that automatically filters the coffee grounds for a smoother brew.

Synonyms

to eliminate
vsto filter
  • Specialized
81 4.3

Remove waste or harmful substances from the body

is about removing unwanted parts by passing through a barrier not bodily expulsion
to clear
vsto filter
74 1.0

To make water or air free from harmful substances

achieves that result specifically by passing material through a barrier
to purge
vsto filter
49 6.3

To remove unwanted substances, things, or people by cleaning

aims at removing parts specifically by passing through a barrier not broad cleansing
to pass through
vsto filter
44 2.8

To make a liquid or gas go through a filter

focuses on removing unwanted parts rather than just causing movement
to refine
vsto filter
  • Specialized
41 3.9

Remove unwanted parts from a material to make it pure

is about removing by passing through a barrier rather than general improvement
to purify
vsto filter
30 4.6

To remove dirt and bad chemicals from water or air to make them clean

focuses on removing by passage through a barrier rather than general purification
to strain
vsto filter
26 3.7

To remove solid bits from a liquid using a filter or sieve

is used more generally to remove unwanted parts rather than only solids
to filter out
vsto filter
20 3.8

To remove unwanted things from water, air, or lists by letting the rest pass

is the same action but used as a single word verb
to screen out
vsto filter
9 4.3

To check and remove people or things that are not wanted

focuses on physical passage through a barrier rather than selection by checking
to separate out
vsto filter
  • Specialized
7 3.7

Remove one part from a mixture using a filter or another method

focuses on passage through a barrier rather than any removal method
to draw
vsto filter
7 8.2

Pass a liquid through a sieve to remove solids

is similar but focuses on extraction rather than general passage
to clarify
vsto filter
  • Specialized
5 4.2

To remove solid bits so a liquid becomes clear

does the same cleaning but by passing through a barrier instead of heat
to percolate
vsto filter
  • Specialized
3 6.4

Make a liquid or gas move slowly through a material with small holes

describes removing unwanted parts by passing through a barrier not just slow flow
to sieve out
vsto filter
1 5.3

Remove unwanted bits from food or material by passing them through a screen

removes unwanted parts in general rather than only by coarse screening
to filtrate
vsto filter
  • Specialized
7.3

To remove solid parts from a liquid or gas using a filter

is the same process expressed in a different word form

Antonyms

1.0

Include something extra to make something larger or better

Phrasal Verbs

20 3.8

To remove unwanted things from water, air, or lists by letting the rest pass

To pass information or choices from higher levels to lower ones so more people get them

1 3.5

To remove unwanted sounds or information to focus on what matters

1 7.4

Information moves up from lower-level workers to higher-level managers

To remove unwanted things so only useful ones remain

Compounds

8 2.8

A machine that removes dust and small particles from the air as it passes through

5 2.2

A device that removes dirt, germs, and bad chemicals from water

A paper or metal thing that keeps coffee grounds out of brewed coffee

fuel filter
  • Specialized
3 3.4

A device in a fuel line that removes dirt and rust from fuel before it reaches the engine

3 3.5

A part in a car engine that cleans oil to protect engine parts

A filter that removes chemicals and smells from water or air using charcoal

filter paper
  • Specialized
1 3.4

Thin paper with tiny holes that lets liquid pass but keeps solid bits

1 4.3

A piece of clear material, like a camera lens, that reduces light passing through it

low-pass filter
  • Specialized
1 5.5

A device that lets slow changes in signals pass and reduces fast changes

blue light filter
  • Specialized
3.5

A screen setting that reduces blue light to ease eye strain and help sleep

bogon filter
  • Specialized
8.6

A tool that blocks internet addresses that are invalid or not assigned

A screen setting or tool that reduces blue light from phones and computers to help your eyes and sleep

filter bed
  • Specialized
3.7

A layer of sand or gravel that cleans water by removing dirt

filter press
  • Specialized
6.4

A machine that removes solids from liquids by pushing the liquid through cloth over frames

A small piece at the end of a cigarette that reduces the harshness of smoke

A cigarette or cigar with a small end piece that removes some harmful parts from smoke before you breathe it

A roll of tobacco with a soft end that helps reduce tar in the smoke

membrane filter
  • Specialized
4.4

A thin material with tiny holes that removes particles and germs from liquids or air

high-pass filter
  • Specialized
4.4

An electronic part that lets high sounds pass and reduces low sounds

A machine that uses flat plates and frames to separate solids from liquids

plate filter press
  • Specialized
6.9

A machine made of many plates that removes solids from liquids

A machine with plates and frames that separates solids from liquids in factories

sponge filter
  • Specialized
3.0

A soft sponge in a fish tank that traps dirt and adds air while letting good bacteria grow

How Thorough

to sterilize
  • Specialized
29 4.1
to purify
30 4.6
to filter
138 3.0
to strain
26 3.7
to sift
12 2.5

Surface Forms

filter infinitive
filtered past
filtered past participle
filtering present participle
filters third person singular

Etymology

Filter comes from the Latin filtrum meaning 'cloth used to strain', so to 'filter' something is like passing it through a cloth that keeps the unwanted bits. That's why to filter means to remove unwanted things or to let something pass through more cleanly.