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filter down

1. (literally) Of a liquid, to slowly seep down through lower substrate levels. The company bottles rainwater that has filtered down through seven layers of volcanic rock, purifying it and enriching it with minerals.
2. (by extension) Of information, resources, communication, etc., to move slowly and in small amounts down to lower levels of people in an organization, population, or group. It always takes a dog's age for any important company information to filter down to me and the other interns. The government has approved a staggering $200 billion stimulus package, but some experts warn it could be years before that money filters down to individuals and smaller businesses.
See also: down, filter

filter up

Of information, resources, communication, etc., to move slowly and in small amounts up to higher levels of people in an organization, population, or group. Local think-tanks are developing new, pragmatic strategies to deal with the burgeoning housing crisis, but they are unlikely to filter up to the agenda of state lawmakers anytime soon.
See also: filter, up


A common hashtag on the social media and photo-sharing platform Instagram for pictures that have not been altered with the variety of filters offered in the app. What a gorgeous sunset tonight. #nofilter

filter out

To keep something from being known or experienced. A noun or pronoun can be used between "filter" and "out." These must not be noise-canceling headphones because they're not filtering out any of conversations currently going on around me in the coffee shop.
See also: filter, out

filter through (something)

To move or pass through some thing. No, it won't be too dark in here—a good amount of light will still filter through these sheer curtains.
See also: filter, through

filter in

 (to some place)
1. Lit. to leak or seep into some place. The smell of bacon cooking filtered into his room and made him wake up. The smoke filtered in and burned our eyes.
2. Fig. [for people] to come into a place, a few at a time, over a period of time. One by one, the guests filtered into the room. They filtered in and started on the snacks.
See also: filter

filter something out of something

 and filter something out
to remove something from a fluid by running it through a filter. We filtered the odors out of the water and made it fit to drink. I'm glad you filtered out the odor.
See also: filter, of, out

filter through (something)

to pass or seep through something. The water filtered through the coffee grounds and dripped into the pot. The clear water filtered through and left the sand behind.
See also: filter, through

filter down

To pass or spread downward from an upper level to lower levels, as through a filter: The information slowly filtered down from management to the hourly employees.
See also: down, filter

filter out

To prevent something from passing through, being communicated, or being perceived: My new glasses filter out ultraviolet rays. These headphones filter unwanted noise out.
See also: filter, out

filter through

To be allowed to pass through something or to find a way through something, especially an obstacle: The sunlight filtered through the thin curtains.
See also: filter, through

bozo filter

n. a setting on an internet email reader that will filter out selected annoying people. (Refers to bozo, a jerk.) Welcome to my bozo filter, jerk!
See also: bozo, filter
References in periodicals archive ?
Under the new study ordered by the water board, Boeing must test filtered surface water and test the filtered sediment over the next 10 rains.
The #25 filters provide the cleanest filtered metal, but they must occupy a larger surface area to offset their higher flow resistance.
However, there was no evidence of any trapped air in the filtered castings.
Filtered messages can be purged in their entirety and attachments can be deleted or quarantined for review and delivery at a later time.
By metallographically counting inclusions and measuring the area they occupy on a section of the filter cake, the inclusion level is expressed with a unit of inclusion area per kilogram of filtered melt ([mm.
In the case of the two high-strength yellow brasses (C86300 and C86400), plates filtered with the fine SC filter could not be filled at 140F (60C) superheat.
Notably, the new Pulse DSL wall-mount platform provides two filtered jacks for phone, fax or answering machine as well as one unfiltered data jack for computers, printers, modems, residential gateways and IADs (integrated access devices).
Rigid cups and baskets can also be molded from the refractory cloth, so large quantities of metal can be filtered during transfer to or from holding furnaces and ladles.
We believe the sophisticated technology of WebWasher(R) will permit the development of a standard software with the flexibility to meet all the future requirements of a multi-cultural Europe in which individual countries, organizations and citizens all have differing concepts of what must and must not be filtered.
To provide the most flexible yet easiest to implement Internet filtering solution to its commercial accounts, filtered ISP Mayberry USA today announced it has formed a strategic partnership with Internet Products Inc.