Comprehensive resource for understanding and mastering English idioms
The idiom "against the clock" means working or trying to complete something before a deadline, time limit, or before the situation changes. It refers to doing something urgently and with great speed, often under pressure or stress. The phrase can also indicate that someone is opposing or going against the norms of society or a particular organization.
The phrase "against the clock" has been used in English since at least the 16th century. It originally referred to working or moving against the flow of time or in opposition to a timetable or schedule. In contemporary usage, the idiom is more commonly associated with working under pressure or trying to complete something urgently before a deadline.