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filter

Intermediate (B1)

IPA: /ˈfɪltər/

KK: /ˈfɪltər/

intransitive verb
Definition

To move or pass through something gradually and in small amounts.


Example

The sunlight filtered through the trees, creating beautiful patterns on the ground.


Tense Forms

Past: filtered

Past Participle: filtered


Conversation
Sloth A
Look at how the sunlight filters through the leaves in the park.
Sloth B
Yeah, it creates such a nice atmosphere here.
Sloth A
I love how the light filters in during the afternoon.
Sloth B
Me too! It makes everything look so warm and inviting.

Synonyms & Antonyms
Synonyms
trickle
seep
drip
Antonyms
rush
flood
surge
noun
Definition

A device or material that allows certain substances to pass through while blocking others, often used to clean air or water, or to select specific wavelengths of light.


Example

The water filter removed impurities, making the water safe to drink.


Conversation
Sloth A
Have you seen my coffee filter?
Sloth B
I think I saw it in the kitchen earlier.
Sloth A
I need it to make my morning brew.
Sloth B
transitive verb
Definition

To remove unwanted parts from something by passing it through a device that only allows certain things to go through.


Example

You need to filter the water before drinking it to remove any impurities.


Tense Forms

Past: filtered

Past Participle: filtered


Conversation
Sloth A
I need to filter the water before we drink it.
Sloth B
Good idea! It might have some impurities in it.
Sloth A
Yeah, I always filter the water when I go camping.
Root Explanation

Filter → It originates from the Latin word 'filtrum' (meaning a sieve or strainer), which is derived from 'filare' (meaning to spin or thread). The word 'filter' refers to the process of separating substances, much like how a sieve separates particles from liquid.

Memory Tip

Think of a 'sieve' or 'strainer' that separates unwanted particles from liquid — that's what a filter does.

Visually Confused Words
filer
refilter
infilter
filleter
wilter
tilter
milter
kilter
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Synonyms & Antonyms
Synonyms
sieve
screen
strainer
Antonyms
block
impurity
obstruction
Sloth B
That's smart; it makes sure we stay healthy on the trip.

Synonyms & Antonyms
Synonyms
sift
strain
purify
Antonyms
pollute
taint
dirty