เพิ่ม ขึ้น เท่า ตัว
“เพิ่ม ขึ้น เท่า ตัว” (пхём кхын тао туа) — to double in Thai. Verb, level B1. Literally "rise by a measure of itself": the self-measure means it became twice as much. Visitors, sales, subscribers. In a live sentence: “จำ นวน นัก ท่อง เที่ยว เพิ่ม ขึ้น เท่า ตัว” — The number of tourists has doubled. Written with the characters เ, พ, ิ, ่, ม, ข, ึ, ้, น, เ, ท, ่… A word from the everyday Thai course, level B1.
In short
| Written in Thai | เพิ่ม ขึ้น เท่า ตัว |
| Read in Latin letters | пхём кхын тао туа |
| Translation | to double |
| Part of speech | verb |
| Level | B1 |
Why it looks that way
Literally "rise by a measure of itself": the self-measure means it became twice as much. Visitors, sales, subscribers
A word with a story stays in memory longer than one learned as a “spelling — translation” pair: memory holds on to meaning, not to a string.
In a live sentence
A single word almost never appears alone in conversation. A sentence shows where it fits and what stands next to it.
- จำ นวน นัก ท่อง เที่ยว เพิ่ม ขึ้น เท่า ตัวджам нуан нак тхонг тиао пхём кхын тао туаThe number of tourists has doubled
How not to forget this word
Reading a word and remembering it are different jobs. A day later, little survives of a single reading — and that is not bad memory, that is how memory works.
- This has been tested on foreign words too. The difference shows up most when you test yourself a few days later rather than straight away.checked many timesKim & Webb, 2022, Language Learning 72(2) · 48 experiments, 3,411 participants, 98 comparisons.
- Recalling beats re-reading. Covering the translation and trying to remember it does more than reading it ten more times.checked many timesAdesope, Trevisan & Sundararajan, 2017, Review of Educational Research 87(3) · 188 experiments, 272 comparisons. g = 0.61; against plain re-reading 0.51, against passive review 0.93.
- An answer you worked out yourself sticks better than one handed to you.checked many timesBertsch et al., 2007, Memory & Cognition 35(2) · 86 studies, 445 comparisons, d = 0.40.
Frequently asked
How do you say “to double” in Thai?
«เพิ่ม ขึ้น เท่า ตัว», read “пхём кхын тао туа”. In a live sentence: “จำ นวน นัก ท่อง เที่ยว เพิ่ม ขึ้น เท่า ตัว” — The number of tourists has doubled. Verb, level B1; written with the characters เ, พ, ิ, ่, ม, ข, ึ, ้, น, เ, ท, ่…
How is “เพิ่ม ขึ้น เท่า ตัว” written in Latin letters?
пхём кхын тао туа. This is a practical spelling — you need it to read aloud and be understood, not to meet an academic standard.
Why does this word look the way it does?
Literally "rise by a measure of itself": the self-measure means it became twice as much. Visitors, sales, subscribers. A word with a story stays in memory longer than a “spelling — translation” pair: memory holds on to meaning, not to a string.