within
Translation
within, inside
Examples
Please reply within seven days.
Please reply within seven days.
The office is within the main building.
The office is within the main building.
That is not within my power.
That is not within my power.
Grammar Patterns
within ((a period of time)) inside a certain time frame Please reply within seven days.
within ((a place)) inside a certain area The office is within the main building.
Similar Words
Synonyms: inside, in; Antonyms: outside, without
Etymology
From Old English 'wiðinnan', from 'wið' (against) + 'innan' (from within). Literally 'against the inside'.
Memory Tips
It's a combination of 'with' and 'in'. Something is 'in' a boundary and stays 'with' that boundary.