Use the Polite Particles “Ka” and “Krap”
Even if you’re only going to learn the words “hello” (สวัสดี – sà-wàt-dee) and “thank you” (ขอบคุณ – kòp kun) in Thai, make sure you attach the appropriate polite particle. For women, that’s ค่ะ (kâ) or คะ (ká) and for men it’s ครับ (kráp). The reason there are two for females is that ค่ะ (kâ) is used at the end of statements, while คะ (ká) is used at the end of questions. To be polite, your hellos and thank yous should sound like this: