Krap and ka: the ending every polite sentence needs
The single biggest thing to remember in Thai is that the polite sentence-ending particle depends on the speaker's own gender, not the listener's — men add krap, women add ka, at the end of greetings, thanks, and most polite statements. Dropping it entirely isn't grammatically wrong, but it can come across as blunt, especially with someone you've just met.
Thai is also a tonal language
Thai uses five tones, and the same sequence of sounds can mean entirely different things depending on pitch. The pronunciation guides above are simplified approximations meant to get you understood in everyday situations — for more precise tones, listening to native speakers is the best way to fine-tune your ear.
Frequently Asked Questions
Is it rude to skip krap or ka?
It's still understandable without them, but leaving them off can sound abrupt or overly casual. With someone you've just met or in a formal setting, using the gender-matched ending is worth the extra effort.
Do people in Thailand ever use English greetings instead?
In tourist areas and among younger speakers, English loanwords like 'hello' and 'bye-bye' are common, especially in casual conversation. Sticking with the Thai versions above is still generally appreciated, particularly on a first greeting.