🇹🇭 Thai phrases

How to Say "I don't know" in Thai

The SPAIKING TeamJuly 27, 2026
ไม่รู้
"I don't know" in Thai · say it like mai roo

The most natural way to say "I don't know" in Thai is ไม่รู้. Tap the speaker above to hear it, then say it back out loud. That is the fastest way to make it stick.

Other ways to say it

ไม่ทราบ
more formal way to say it
ไม่แน่ใจ
means 'not sure', used in uncertain contexts

When to use it

Use this phrase when you genuinely do not have the information someone is asking for. It is appropriate in both casual and formal situations. You can use it in conversations, at work, or when asked about something you are unfamiliar with.

Say it out loud, get corrected

Reading it is not the same as saying it. Practice "I don't know" and thousands more with an AI coach that listens.

Examples in Thai

ThaiEnglish
เขาถามว่าฉันจะไปไหน แต่ฉันไม่รู้He asked where I was going, but I don't know.
Common mistake
Learners often confuse this with 'ไม่แน่ใจ', which means 'not sure'.

The fastest way to remember it

Vocabulary you only read fades fast. Vocabulary you say out loud sticks. Hear ไม่รู้, repeat it a few times, then use it in a real sentence. SPAIKING lets you practice exactly that, speaking Thai with a coach that corrects your pronunciation in real time. You can start with two free conversations.

Frequently asked questions

Can I use this phrase in a formal setting?

Yes, it is suitable for both formal and informal contexts.

Learn Thai by speaking it

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