preposition
within
wihth-IHN
preposition
1
Inside the physical limits of something.
"The treasure was hidden within the castle walls."
2
Before a specified length of time has passed.
"The package will arrive within three days."
3
Inside the scope, range, or limits of something.
"The proposal stays within the agreed budget."
How to Use Within
Learner’s notesIn plain EnglishInside a place, time limit, or set of boundaries.
Common pairings
within reach
within budget
within a week
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The treasure was hidden _____ the castle walls.
Etymology
From Old English wiþinnan, formed from with plus in.