Kathoey (กะเทย) is Thai, belonging to Thailand and Thai people, including those living far from home. Related words exist in Lao and Khmer. Over time it has covered intersex people, trans women, and people who live as women without ever using that word about themselves, and its edges are argued over constantly, in Thai. It's contested even as a word: some use it about themselves without flinching, others prefer สาวประเภทสอง (second-type lady) or ผู้หญิงข้ามเพศ (trans woman), and no one gets to settle that argument for everyone else.
Transgender female is the plain, definitional phrase: a woman who was assigned male at birth. It's the form-filling version of the term — most people say trans woman, trans femme, or just woman, and some find "transgender female" cold because it reads like medical intake paperwork. It carries no specific national or cultural history the way kathoey does, and it's used, and understood, across many countries and languages as a straightforward clinical description.
How to tell them apart
- Ask if the word belongs to Thai language and culture specifically. If so, kathoey; if you want a plain, culture-neutral clinical phrase usable anywhere, transgender female.
- Kathoey has historically covered a wider, blurrier group — including some intersex people and people who never call themselves women — while transgender female is a tighter definition centred specifically on being a woman assigned male at birth.
- Kathoey is actively contested within Thailand, with some preferring other Thai terms instead; transgender female is rarely contested as a description, though many people simply prefer trans woman in everyday speech.
More likely Kathoey
- You're Thai, or from a Thai family, and the word's specific cultural and linguistic history describes your situation.
- You want a word with an older, wider Thai social history rather than a modern clinical one.
- You're discussing Thailand's specific social and legal context around gender diversity, rather than international definitions.
More likely Transgender Female
- You want the plain, internationally understood clinical phrase, useful on forms, in medical settings, or across language barriers.
- You don't have a specific connection to Thai culture or language and want a general description instead.
- You'd rather say trans woman or trans femme day to day, keeping "transgender female" specifically for formal or clinical contexts.
When both words are honestly available
- Both point at women who were not assigned female at birth, though kathoey's boundaries have historically been wider and blurrier than that single definition.
- Neither word is settled or uncontested — kathoey is actively debated within Thai communities, and even transgender female has plenty of people who prefer other everyday phrasing.
What people get wrong
Kathoey just means trans woman in Thai.
It's wider and messier than that. It has historically covered intersex people and people who live as women without adopting that word, and plenty of Thai trans women prefer other terms like ผู้หญิงข้ามเพศ instead.
Transgender female is a rude or outdated term.
It's simply the clinical, form-filling version of trans woman — accurate and not inherently rude, though most people prefer trans woman or trans femme in everyday conversation, keeping the fuller phrase for official contexts.
Questions people ask
- Can a non-Thai person be called kathoey?
- Not really — the word belongs to Thai language and culture. A non-Thai trans woman would generally use trans woman or transgender female instead, since kathoey carries a specific cultural history that doesn't transfer.
- Is it offensive to call a Thai trans woman kathoey?
- It depends on the person — some use it about themselves comfortably, others find it carries a playground edge and prefer สาวประเภทสอง or ผู้หญิงข้ามเพศ. It's safest to ask, or default to trans woman, rather than assume.