Practice: choosing I and you
What you will be able to do
Pick the right word for I and you in a market, a clinic and a visa office, hear the kinship words that stand in for both, and know which pronouns you should recognise but never say.
Thai has no single I and no single you. The word depends on your gender, on the setting, and on the apparent age of the person in front of you — and often the fluent move is to use no pronoun at all. Learn the safe defaults first, then the kinship words that do the same job.
Which word for I?
a man at a noodle stall
ผม (phǒm) is polite, neutral and safe everywhere, from a noodle stall to the immigration counter. There is no situation in which it is wrong, so a man never has to think about this again.
Which word for I?
a woman buying mangoes at the market
ฉัน (chǎn) is the everyday form, fine in shops and with people you know. Using ดิฉัน to buy mangoes sounds stiff, like reading out your passport.
Which word for I?
a woman at the visa office
ดิฉัน (dì-chǎn) is the formal one: a visa office, a bank, a job interview. เรา (rao) is a comfortable I in a coffee shop, but at an official counter it sounds a shade too casual.
Which word for you?
a stranger behind a counter, whose name you do not know
คุณ (khun) is the workhorse: polite with strangers, staff and officials. It gets even better when you attach it to something — khun plus a first name once you know it, or khun plus a role, as in คุณหมอ (khun mǎw) to a doctor.
Which word for you?
a market vendor about ten years older than you
พี่ (phîi), older sibling, for anyone a bit older. When the vendor calls you phîi back, that is warmth, not cheek, and you can call her phîi right back.
Which word for you?
the waiter, clearly younger than you
น้อง (náwng), younger sibling, is standard for waiting staff and shop assistants, and it is warm rather than superior.
Which word for you?
the stallholder of your parents' generation, a woman
ป้า (bpâa), auntie, is the word for an older woman of that generation, and ลุง (lung), uncle, for the man. For someone older than you but younger than your parents, the words are น้า (náa) and อา (aa).
How many pronouns does this sentence need?
ไปไหนครับ
ไปไหนครับ (bpai nǎi khráp), going where, works exactly as it stands and needs no you in it. Thais avoid pronouns whenever they can, and if a pronoun feels risky, dropping it is not lazy learner Thai: it is what fluent speakers do.
A vendor older than you says this. Who is พี่?
พี่ลดให้
พี่ลดให้ (phîi lót hâi) means I will take something off for you. The vendor uses the word describing her position relative to you, the way she would use a name. The market page has the mirror image, พี่ลดให้หน่อยนะ (phîi lót hâi nàwy ná), where you are the one speaking and พี่ is the vendor you are addressing. Same word, opposite ends of the exchange: the speaker is what tells you which.
Said by a woman called Nok, what does this mean?
นกไม่ชอบ
Thais use their own nickname where English uses I, so Nók mâi châwp is I don't like it. It sounds soft and friendly rather than childish, and it sidesteps the whole question of which pronoun your age and your gender entitle you to. The same three syllables could be about a third person, or could even be a you if the listener were the Nok in question — as with พี่ลดให้, it is the speaker that settles which, and here the speaker is Nok.
Who can this refer to?
เขา
เขา (khǎo) carries no gender and no number, so a story about khǎo can run for a minute before you learn who it was about, and asking is normal rather than rude. It can already be plural on its own; พวกเขา (phûak khǎo) only makes the plural explicit, the way phûak does in พวกเรา.
Who says this for I?
หนู
หนู (nǔu) means mouse. A girl or young woman says it for I to anyone clearly older, and that older person says it back to her for you — so an older speaker talking to a child is indeed using nǔu, but as you, not as I. A man never uses it of himself; the humble I he wants in front of someone senior is กระผม (grà-phǒm).
What do you do with this pair?
กู / มึง
Aimed at a stranger, a colleague, a vendor or anyone older, กู (guu) and มึง (meung) land close to a slap, and there is no graceful way back. Expect to hear them constantly on the street and in films; let a Thai friend use them to you first, then mirror that friend and nobody else.
Which word for you?
an immigration officer
Saying ท่าน (thâan) to an immigration officer does not sound extra respectful, it sounds like you are reading from a script. คุณ, plus a calm ครับ (khráp) or ค่ะ (khâ) at the end of your sentences, is already the full politeness that situation requires.
Common mistake
Do not learn pronouns from Thai songs and dramas: เธอ (thoe) is for lovers and close friends, แก (gae) is rough-affectionate between old friends, and มึง (meung) can start a fight. A man saying ฉัน sounds like he is quoting lyrics. When in doubt, drop the pronoun or use คุณ plus the person's first name, and save ท่าน for the airport loudspeaker that says it to you. And do not swap pronouns halfway through a conversation because you have just learnt a new one — moving from khun to phîi mid-chat reads as a deliberate step closer. That may be what you want; make it on purpose.