お vs ご: 日本語の敵語接頭辞の使い分け方

Japanese has two honorific prefixes — お (o) and ご (go) — that make words sound polite, respectful, or simply more refined. But which one do you use? And why do some words take o while others take go? This guide breaks it all down with clear rules and plenty of real examples.

At a Glance: お (o) vs. ご (go)

Yuka

The o/go rule sounds complicated but there’s a simple trick: if the word is from Chinese, use go. If it’s native Japanese, use o. You'll get it right 80% of the time!

What Do お (o) and ご (go) Actually Do?

These prefixes are called 美化語 (bikago) — beautification words. They serve two main purposes:

Words That Take お (o) — Native Japanese Words

Most everyday words of Japanese origin take お:

Words That Take ご (go) — Sino-Japanese Words

Words of Chinese origin (usually written with two kanji and more formal in tone) take ご:

Rei

So when I hear ご注文 (go-chuumon) at a restaurant, the staff is being polite about my order?

Yuka

Exactly! ご注文はお決まりですか。 (Go-chuumon wa o-kimari desu ka?) — literally ‘Has your honourable order been decided?’ It's very natural in service settings.

Exceptions and Words That Accept Both

A handful of words can take either prefix, sometimes with a difference in formality:

When in doubt, use the form you have heard from native speakers in the same context. Dictionaries often mark which prefix is standard.

When NOT to Use お or ご

These prefixes never attach to foreign loanwords (gairaigo), and overuse can sound unnatural or even comical:

Exception: おトイレ (o-toire) is widely used even though トイレ is from English ‘toilet’ — this is an accepted exception through long usage.

お and ご in Keigo (Honorific Speech)

In formal keigo, these prefixes are especially common. Two key patterns:

Yuka

お願いイタシます (o-negai itashimasu) is the most polite way to make a request — you'll see this at the bottom of formal emails and letters all the time.

Fixed Expressions You Should Memorise

Quick Quiz

Choose お or ご for each word.

1. ___連絡 (renraku — contact; Chinese-origin word)
→ ご連絡 (go-renraku)

2. ___名前 (namae — name; native Japanese)
→ お名前 (o-namae)

3. ___意見 (iken — opinion; Chinese-origin)
→ ご意見 (go-iken)

4. ___お茶 (cha — tea; native Japanese)
→ お茶 (o-cha)

5. テレビ (terebi — TV; loanword) — what prefix would you use?
→ No prefix — loanwords do not take お or ご.

あわせて読みたい

Japanese Polite Language for Daily Life: Essential 内相語 Phrases Learn the everyday polite Japanese (teineigo) you actually need: greetings, apologies, thank-yous, and requests for shops and daily situations. The essential register for real-life Japan.

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Do you have a favourite お/ご expression? Share it in the comments below — and let us know if you've ever made an お/ご mistake that confused a native speaker!