- diurnal, by daylight, as opposed to nightly
- quotidian, that occurs every day, or at least every working day
- diurnally, by daylight
- quotidianly, every day
- a newspaper that is published every day.
- (video games) A quest in a massively multiplayer online game that can be repeated every day for cumulative rewards.
- (Britain, slang) a daily disposable.
- (Britain) a cleaner who comes in daily.