preposition

within

inside, in, not beyond

Please reply within seven days.

Please reply within seven days.

The office is within the main building.

The office is within the main building.

He acted within the law.

He acted within the law.

((a period of time / a distance / an area)) inside a particular period of time, distance, etc. The results will be announced within a week.

Synonyms: inside, in; Antonyms: outside, without

From Old English 'wiðinnan', meaning 'from within'. A combination of 'with' + 'in'.

Think of it as 'with' + 'in' – together inside a boundary or limit.

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