If you’ve learned basic Japanese, you might think:

“I’m sick” = 病気びょうきです

But here’s the truth…

This can sound unnatural (or even too serious) in everyday conversation.

I hear A LOT of people make this mistake because some textbooks teach you that…😭
So today, let’s break it down so you and your students can sound more natural 👇

🚫 What 病気びょうきです Really Means

Examples:

彼かれは病気びょうきです。

→ He is seriously ill.

病気びょうきで入院にゅういんしています。

→ I’m hospitalized due to illness.

So if you say “病気(びょうき)です”, it might sound like: “I have a serious disease.”

Not what you mean when you just have a cold 😅

✅ Natural Ways to Say “I’m Sick”

① 体調たいちょうが悪わるいです

→ “I’m not feeling well”

Safe, polite, and very natural
Works in any situation

Example:

体調たいちょうが悪わるいので、今日きょうは休やすみます。

→ I’m not feeling well, so I’ll take the day off.

② 具合ぐあいが悪わるいです

→ “I feel sick / unwell”

Very common in daily conversation
Slightly more casual than 体調 (たいちょう)

Example:

ちょっと具合ぐあいが悪わるいです。

→ I feel a bit sick.

③ 風邪かぜです

→ “I have a cold”

Use when you know it’s a cold

Example:

風邪かぜをひきました。

→ I caught a cold.

④ お腹なかが痛いたいです / 頭あたまが痛いたいです

👉 Be specific!

お腹なかが痛いたい。

→ My stomach hurts.

頭あたまが痛いたい。

→ I have a headache.

This is actually very natural in Japanese.

🎯 Simple Summary

Japanese	Meaning	When to Use
病気 (びょうき) です	Serious illness	Doctor-level / serious condition
体調 (たいちょう) が悪 (わる)い	Not feeling well	Safe & polite
具合 (ぐあい) が悪 (わる) い	Feel sick	Casual conversation
風邪 (かぜ) です	Have a cold	Specific illness

In English, people say “I’m sick” for everything.

But in Japanese, people:

👉 avoid vague expressions
👉 and often describe their condition more clearly

That’s why:

❌ 病気びょうきです → too heavy
✅ 体調たいちょうが悪わるい → natural and flexible

🗣️ Quick Practice

Which one sounds natural?

1. 病気びょうきですから会社かいしゃを休やすみます。
2. 体調たいちょうが悪わるいので会社かいしゃを休やすみます。

Answer: #2 is natural!

✨ Final Takeaway

If you remember just one thing:

👉 Don’t use 病気びょうきです for everyday “I’m sick”

Instead, go with:

体調たいちょうが悪わるい
具合ぐあいが悪わるい

These will instantly make your Japanese sound more natural and native-like 🙌

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