From Longman Dictionary of Contemporary Englishbe the order of the daybe the order of the daya) SUITABLEto be suitable for a particular occasion or situation Casual clothes are the order of the day. b) COMMONto be very common at a particular time – used especially when you disapprove of something Sexual explicitness is the order of the day. → order
Examples from the Corpus
be the order of the day• Downsizing was the order of the day, and thousands of jobs were lost.• Here, too, politics was the order of the day.• Repression, Government spies and agents provocateur were the order of the day.• Realism was the order of the day on all sides.• In terms of the international economy, free trade was the order of the day.• Spontaneity and whim are the order of the day.• Casual clothes will be the order of the day.• Passive acceptance would be the order of the day. 