欠席をする

You use this phrase when you need to report your absence. Usually, it’s combined with a reason or a particle. For example, 授業を欠席をする means 'to be absent from class.' Notice the を (o) between 欠席 and する. In casual speech, people often drop the を and just say 欠席する. Adding the を makes it feel a bit more deliberate and polite. It functions like a verb. You can change the ending to 欠席をしました for the past tense. If you're talking to a boss, use 欠席させていただきます for extra politeness. Just don't use it for your own funeral; that's a different kind of absence!

Imagine you’re on a Zoom call and the host asks where Tanaka is. Someone might say, 'Tanaka-san is 欠席をしています today.' In a university setting, the professor might check the portal and see who decided to 欠席をする. If you get a wedding invite through a website like 'Zola,' you’ll see a checkbox for 欠席. Even on Slack, you might post: 'I have a fever, so I will 欠席をする for the 10 AM meeting.' It’s the universal way to say 'I'm not coming, and I've officially logged it.'

Use this for anything with an RSVP. Use it for school, university, and cram school. Use it for any business meeting where you have a calendar invite. Use it for formal ceremonies like weddings or funerals. It’s also the right term for official documents and forms. If you’re fillling out a Google Form for a club, this is your word. It shows you respect the organization's structure. It says, 'I know I matter to the headcount.'

Avoid this for casual hangouts with friends. If you can’t make it to a coffee date, don't use 欠席をする. It sounds like you're treating your friend like a school principal. Don't use it for personal habits, like 'I was absent from the gym.' Also, don't use it for people who aren't home. If a delivery driver knocks and you're out, you aren't 欠席. You are 不在 (fuzai). Using the wrong one might make the driver think he’s delivering to a classroom!

Using 欠席をする for a friend's party is too stiff. It’s like wearing a tuxedo to a beach BBQ.

You cannot be 'absent' from your own house. You just aren't there!

For a doctor, you 'cancel an appointment,' you don't 'be absent' from the building.

休む (yasumu) is the most common alternative. It means 'to rest' or 'to take a day off.' It’s much softer and more common in daily talk. If you have a cold, you 休む. 欠席をする is the official record of that 休む. Another one is 欠勤する (kekkin suru), which is specifically for missing work. If you say 欠席 at a job, people will know what you mean, but 欠勤 makes you sound like a true corporate warrior.

欠席届 (kesseki-todoke) is an 'absence report' or 'excuse note.' In the old days, parents wrote these on paper. Now, you probably just tap a button in an app. 無断欠席 (mudan kesseki) is the scary version. It means 'absence without notice.' That’s when you ghost your boss or teacher. Don't do that. It’s the fastest way to get a 'Please see me' message on Teams.

Is it okay to use this on Slack? Yes, it’s very common for professional updates. Is it different from 欠勤? Yes, 欠勤 is only for work, while 欠席 is for any event. Can I use it for a date? Only if you want it to be your last date! It’s far too formal for romance. Stick to 行けない (cannot go) for your crush. Humor is the best way to keep your boss happy when you're not there, but 欠席をする is the safest way to keep the HR department happy.