Say it
mâi rúu
ไม่รู้
The standard way to express 'I don't know' in Thai. Used in all contexts from casual conversations to formal situations. Thai speakers use this frequently without feeling awkward about admitting ignorance. Can be softened by adding ครับ/ค่ะ for politeness or เหมือนกัน (likewise) when agreeing with someone else's uncertainty.
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