LESSON NOTES · レッスンノート

N4Lesson notes · Sep 30, 2026

Bored in Japanese: 退屈たいくつ, つまらない, 暇ひま and 飽あきた — which one you mean

"Bored" is not one word in Japanese: 退屈たいくつ is the feeling of being bored, つまらない says a thing is boring, 暇ひま means you have free time, and 飽あきた means you are sick of something you have done too often.

English lets one word cover all four. Japanese splits the job, and the split is exactly where learners trip. The worst trap is one you already know from English: I'm bored and I'm boring are different sentences, and Japanese has the same pair with a nastier twist.

The basics

How do you say "I'm bored" in Japanese?

The safest, most direct answer is 退屈たいくつだ (たいくつだ), or the verb form 退屈たいくつしている. Both describe you being in a bored state, with nothing engaging your mind.

退屈たいくつだなあ。 — I'm bored. (casual, talking to yourself or a friend) 授業じゅぎょうが長ながくて、退屈たいくつしています。 — The class is long and I'm bored. (polite, describing your own state)

退屈たいくつ is a noun that works as a na-adjective (退屈たいくつな話はなし, "a boring talk") and also combines with する ("to be bored"). If you are shaky on why some adjectives take な and others end in い, i-adjectives vs na-adjectives sorts that out, because this whole article sits right on that line: 退屈たいくつ is a na-adjective, つまらない is an i-adjective, and 暇ひま is a na-adjective too.

What is the difference between 退屈たいくつ and つまらない?

退屈たいくつ is about how you feel; つまらない is about how good the thing is. A film can be つまらない (dull, not worth watching) without you ever feeling 退屈たいくつ, and you can feel 退屈たいくつ in a perfectly good film if your mind wanders.

この映画えいがはつまらない。 — This movie is boring. (casual, judging the movie itself) この映画えいがを見みて、退屈たいくつした。 — I got bored watching this movie. (casual, describing your reaction)

The subject tells you which word to reach for. If the sentence is really about the thing, use つまらない. If it is really about your state of mind, use 退屈たいくつ.

つまらない is a plain i-adjective, so it conjugates as you would expect: つまらなかった for the past, つまらなくない for "not boring." The ない is baked into the word, so learn it as one unit.

Beyond the basics

How do these words compare at a glance?

Word Type Usual subject Meaning
退屈たいくつだ / 退屈たいくつする na-adj / verb a person I'm bored (nothing engaging)
つまらない i-adj a thing it is boring / not worth it
暇ひまだ na-adj a person I have free time
飽あきた / 飽あきる verb a person I'm sick of it (repetition)
だるい i-adj a person sluggish, heavy

The subject column is the cheat sheet. If the subject is a thing being judged, つまらない. If it is a person in a state, the other four split by cause: nothing to do (退屈たいくつ), nothing scheduled (暇ひま), too much of the same (飽あきた), or a heavy body (だるい). A person who gets bored of things quickly is 飽あきっぽい (あきっぽい), "fickle, easily bored."

Is だるい also a "bored" word?

Not really, but learners lump it in because ダルい can be muttered with a sigh on a boring afternoon. It actually means heavy and sluggish, often with a hint of being unwell. That belongs to a different lesson, and tired in Japanese: 疲つかれた, 眠ねむい, だるい covers it properly, along with the other words English collapses into "tired."

How do people say it in casual speech and slang?

Casual Japanese shortens and stretches these words all the time.

つまんない。 — This is boring. (casual, very common contraction of つまらない) ヒマー。 — I'm bored / I've got nothing to do. (casual, dragged out, friends texting) なんかつまんないなあ。 — Man, this is kind of dull. (casual, a mild complaint)

つまんない is the everyday spoken form of つまらない, and you will hear it far more than the full version in anime and real life. ヒマー is 暇ひま with the vowel stretched, and it usually means "I'm bored and I want you to entertain me," so it leans toward bored even though 暇ひま alone does not. Both are fine among friends and wrong in a meeting.

There is also the classic anime bored-kid line, said with a long sigh:

あー、ヒマだなあ。 — Ahh, I've got nothing to do. (casual, slumped on a desk, staring at the ceiling)

If you hear it while a character is sprawled out, it means bored. If you hear the same words from someone glancing at a calendar, it means simply free.

What is the "I'm boring" trap?

English speakers know I'm bored versus I'm boring. Japanese has the same trap, and the words make it easier to miss.

私わたしはつまらない人間にんげんです。 — I'm a boring person. (polite, describing your personality) 私わたしは退屈たいくつしています。 — I'm bored. (polite, describing your state)

If you say 私わたしはつまらない to mean "I'm bored," a listener hears "I'm boring," or "I'm worthless." Japanese also uses つまらないもの as a humble phrase for a small gift ("it's just a trifle"), which is the same word with a modest, self-lowering sense. So つまらない points at the thing, and if the thing is you, that is not what you meant.

Notice this is the same subject rule again: つまらない judges the subject, 退屈たいくつ reports the speaker's feeling. The happy pair follows that rule too: 面白おもしろい judges the thing and 楽たのしい reports your own enjoyment, a contrast fun in Japanese illustrates with anime examples.

Common mistakes

  • Using 暇ひま to mean bored in every sentence. 暇ひまです is often just "I'm free." Say 退屈たいくつです if you want the bored feeling to be clear.
  • Saying 私わたしはつまらない for "I'm bored." It means "I'm boring." Use 退屈たいくつだ or 退屈たいくつしている instead.
  • Using 飽あきた when you mean tired. 飽あきた is about repetition, not energy. Being wiped out is 疲つかれた.
  • Adding な after つまらない. つまらない is an i-adjective and attaches straight to a noun: つまらない映画えいが, not つまらないな映画えいが.
  • Treating 退屈たいくつ and つまらない as interchangeable. 退屈たいくつな映画えいが is fine, but つまらない is the natural verdict on a thing, and 退屈たいくつ is the natural report of your own feeling.

Practice

Build each answer before opening it. Questions 5 and 6 are a pair: 退屈たいくつ reports your own feeling, while つまらない judges its subject.

1. You want to tell a friend, casually, that this movie is dull. Which word?

Show answer

この映画えいがはつまらない — the subject is the movie, so the thing-judging word つまらない fits.

2. You have nothing scheduled this afternoon and you are happy about it. Which word?

Show answer

今日きょうは暇ひまです — 暇ひま just means free time. It carries no complaint.

3. You have eaten the same lunch for a month. How do you say you are sick of it?

Show answer

もう食たべ飽あきた — 飽あきる is repetition boredom, and 食たべ飽あきた means "I've eaten it too many times."

4. What is the casual spoken form of つまらない?

Show answer

つまんない — the ら slides into ん in fast speech. It is very common among friends.

5. Say "I'm bored" politely, describing your own state.

Show answer

退屈たいくつしています — 退屈たいくつ reports the speaker's feeling. This is the pair to question 6.

6. What does 私わたしはつまらない人間にんげんです mean?

Show answer

I'm a boring person. つまらない judges the subject, and here the subject is you. It does not mean "I'm bored."

7. Is 暇ひま an i-adjective or a na-adjective?

Show answer

A na-adjective — 暇ひまな人ひと, 暇ひまなとき. It is the opposite of 忙いそがしい, which is an i-adjective.

8. What does 飽あきっぽい describe?

Show answer

Someone who gets bored easily. It is 飽あきる plus っぽい, "tending to," a personality word.

9. A character is sprawled on a desk sighing あー、ヒマだなあ. Bored or just free?

Show answer

Bored — the sigh and the stretched ヒマ push it toward "nothing to do and I hate it." The same words with a calm tone would just mean free.

The bored-versus-boring mix-up is easy to catch in speech, so talk about a dull meeting and a slow weekend in a trial lesson and choose between 退屈たいくつ, つまらない, 暇ひま and 飽あきた each time.

FAQ

Is 退屈たいくつ the most common way to say bored? It is the standard word, but in casual speech people say つまんない or ヒマ far more often. 退屈たいくつ shows up more in writing, in polite speech, and when you describe your own state.

Can I say 私わたしは退屈たいくつです? Yes. It means "I'm bored." The word is fine for a person as subject, unlike つまらない.

What is the difference between 退屈たいくつ and 飽あきた? 退屈たいくつ is boredom from having nothing engaging. 飽あきた is boredom from too much repetition. You can feel 退屈たいくつ on day one of a slow trip, but you can only 飽あきる of something you have done before.

Does 暇ひま sound negative? Not by itself. 暇ひまな人ひと can sound a little pointed, since it can imply someone has too much time on their hands, but 今日きょうは暇ひまです is a neutral scheduling statement.

How do you say "That's boring" about someone's story? つまらない話はなし or 退屈たいくつな話はなし, but be careful: saying it to the person's face is blunt. Japanese speakers often hedge with ちょっと… instead.

Is つまらない always negative? In the "boring" sense, yes. The humble つまらないものですが ("it's only a small thing") is a fixed polite phrase used when handing over a gift, and the negative sense is deliberately turned toward yourself.

Vocabulary from this article

Tap the block to select all of it, then copy. In Anki: File → Import, note type Basic, separator Tab — the first column becomes the front, the second the back.

退屈	たいくつ — boredom, boring (na-adj)
退屈する	たいくつする — to be bored
つまらない	つまらない — boring, dull, worthless
つまんない	つまんない — boring (casual contraction)
暇	ひま — free time, not busy (na-adj)
飽きる	あきる — to get tired of, to have had enough
飽きっぽい	あきっぽい — easily bored, fickle
食べ飽きる	たべあきる — to be sick of eating something
だるい	だるい — sluggish, heavy
人間	にんげん — person, human being
映画	えいが — movie
授業	じゅぎょう — class, lesson

I'm Yuuki, a Japanese teacher based in Tokyo. I've taught on italki as a Top 1% teacher and watched over 1,500 anime, so most of the example sentences on this blog come from lines I've actually heard students ask about — including this one, where the bored/boring mix-up shows up again and again. For practice with feedback, Book a trial lesson · $13, or work through Japanese practice exercises first.

Sources: the author's own lessons and standard reference grammars.

More drills like the ones above, plus a timed JLPT-style mock test: Practice · N4 · Read something at this level: JLPT N4 stories with audio

More “People, Feelings & Everyday Life in Japanese” articles →

Want to try this in a real conversation?

30-minute trial lesson, $13. Times shown in your own timezone.

Practice it out loud with a Tokyo native. ★5.0 from 358 italki reviews.

See how the lessons work →

Book a trial lesson · $13