within

American  

[with-in, with-] / wɪðˈɪn, wɪθ- /

adverb

1. in or into the interior or inner part; inside.

2. in or into a house, building, etc.; indoors.

   The fire was burning on the hearth within.

3. on, or as regards, the inside; internally.

4. inside an enclosed place, area, room, etc..

   He was startled by a cry from within.

5. in the mind, heart, or soul; inwardly.

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preposition

1. in or into the interior of or the parts or space enclosed by.

   within city walls.

2. inside of; in.

3. in the compass or limits of; not beyond.

   within view;

   to live within one's income.

4. at or to some point not beyond, as in length or distance; not farther than.

   within a radius of a mile.

5. at or to some amount or degree not exceeding.

   within two degrees of freezing.

6. in the course or period of, as in time.

   within one's memory;

   within three minutes.

7. inside of the limits fixed or required by; not transgressing.

   within the law.

8. in the field, sphere, or scope of.

   within the family;

   within one's power.

noun

1. the inside of a place, space, or building.

within British  

/ wɪˈðɪn /

preposition

1. in; inside; enclosed or encased by

2. before (a period of time) has elapsed

   within a week

3. not beyond the limits of; not differing by more than (a specified amount) from

   live within your means

   within seconds of the world record

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adverb

1. formal inside; internally

within Idioms  

More idioms and phrases containing within

• in (within) reason
• spitting distance, within
• wheels within wheels

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Etymology

Origin of within

First recorded before 1000; Middle English withinne (preposition and adverb), Old English withinnan (adverb), equivalent to with with- + innan “from within,” equivalent to in in + -an, suffix of motion

Explanation

Use the adverb within when you need to say that something is on the inside. If you find that the door to your brother’s room is locked from within, that means it’s locked from the inside and he really doesn't want you to enter. Within often refers to something on the inside of an object or structure — like those screams coming from within the haunted house. You can also use the word more figuratively to describe something that’s in your soul or mind — something that’s internal. For example, you might feel a fire within you as you start getting excited about playing in the big game.

Example Sentences

There have been calls, within his own party, to investigate and impeach the governor, who had been spoken of as a potential presidential candidate in 2028.

From Los Angeles Times • May 20, 2026

Both results are well within the poll’s plus or minus 2.8% margin of error.

From Salon • May 20, 2026

Speaking at Creg y Cowin, he said the island sat in a unique position within a band of rainforest-friendly conditions stretching along the coasts of Britain and Ireland.

From BBC • May 20, 2026

“Set within one of the city’s most secure gated enclaves, this newly rebuilt estate spans five acres on a commanding promontory, opening to sweeping mountain views and complete seclusion,” the description adds.

From MarketWatch • May 20, 2026

From deep within the cave came a cry.

From "Wolf Brother" by Michelle Paver

Related Words

• in
• indoors
• inside