within

From Old English wiþinnan. More at with- +‎ in.

• (Received Pronunciation) IPA^(key): /wɪðˈɪn/
• (US) IPA^(key): /wɪðˈɪn/, /wɪˈθɪn/
• (Scotland) IPA^(key): /wɪˈθɪn/

• Audio (US)

  (file)

• Hyphenation: with‧in

within

1. In the inner part, spatially; physically inside.

   within his hearing;  within her studio

   • 1908, Kenneth Grahame, The Wind in the Willows,

     The Rat […] lightly stepped into a little boat which the Mole had not observed. It was painted blue outside and white within, and was just the size for two animals; and the Mole's whole heart went out to it at once […] .

2. In the scope or range of.

   within five seconds of breaking the record;  within an inch of falling overboard

   • 2011, Tom Fordyce, Rugby World Cup 2011: England 12-19 France

     England struck back with a fine try from Ben Foden and closed to within seven points with three minutes left when Mark Cueto capitalised on a break from replacement Matt Banahan.

3. Before the specified duration ends.

   Leave here within three days.

   • 2012, Christoper Zara, Tortured Artists: From Picasso and Monroe to Warhol and Winehouse, the Twisted Secrets of the World's Most Creative Minds, part 1, chapter 1, 27:

     On October 6, 1927, Warner Bros. released The Jazz Singer, the first sound-synched feature film, prompting a technological shift of unprecedented speed and unstoppable force. Within two years, nearly every studio release was a talkie.

   • 2012 June 9, Owen Phillips, BBC Sport:

     And Netherlands, backed by a typically noisy and colourful travelling support, started the second period in blistering fashion and could have had four goals within 10 minutes

• without
• outside
• outwith

within (not comparable)

1. In or into the interior; inside.