How to Say “Be careful” in Thai
ระวังด้วย
rá-wang dûay
Be careful
ค่ะ and ครับ are polite particles — they depend on the speaker's gender, not the listener's.
Word by word
When to use it
ระวัง (ra-wang) means "watch out" or "be careful" — it doubles as a warning sign (you'll see ระวัง on Thai construction notices). ด้วย adds "also," นะ softens it into caring advice rather than a sharp warning. Parents say it to children constantly.
Why you've seen it spelled differently
You may have seen ระวังด้วย written as: rawang duay, ra-wang duay, la-wang duay.
There is no single standard for writing Thai in the Roman alphabet — phrasebooks, road signs, and tourist guides each follow a different system, and many just invent their own spellings. The romanization on this page uses a consistent IPA-based system that marks all five tones and distinguishes short from long vowels. The same word always gets the same spelling. Paste any Thai to see it romanized →
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