I will be busy for the rest of the day.
for the rest of sth
idiomThis means for the remaining part of a time period or an event. You use it to talk about the time that is left.
The rain ruined our picnic, so we stayed inside for the rest of the afternoon.
After the sudden loss of their leader, the team struggled to maintain their focus and motivation for the rest of the season.
Last updated April 22, 2026