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.

---

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

---

adverb

1. formal inside; internally

within Idioms  

More idioms and phrases containing within

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

---

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

See Examples For:

within

The indoor climbing community has voiced several concerns about the provision for a climbing wall within the new sports centre - which is to be moved to the current 5-a-side building.

From BBC ● Jul. 23, 2026

Hunter noted that since early July, the SOX index has corrected 20% and the hyperscaler group “has bounced within its broad 2026 trading range.”

From MarketWatch ● Jul. 23, 2026

Many big investment firms have developed automated systems to monitor Truth Social and take action—often within a fraction of a second, traders said.

From The Wall Street Journal ● Jul. 23, 2026

“It’s not just harm. It’s not just anger. It’s almost like a Zen master within the goddess role of the teaching as well. ‘Be careful what you wish for,’ gluttony, greed, all of these things.”

From Los Angeles Times ● Jul. 23, 2026

That doubt seemed to crack something within him that was full of hurt and loss and fear.

From "The Way to Rio Luna" by Zoraida Cordova

Related Words

• in
• indoors
• inside