By heart in Thai

“By heart” in Thai is ขึ้นใจkûen-jai.

ขึ้นใจ kûen-jai

by heart (known perfectly) adverb

  • kûen falling
  • jai mid
  • Falling: start high and drop clearly, like a firm “No!”
Parts: ขึ้นkûen to go up, to rise ใจjai heart, mind

จำขึ้นใจjam kûen-jai = to know by heart.

You'll hear it in Khuen Jai (ขึ้นใจ).

How to use it

ขึ้นใจkûen-jai, "up into the heart", comes after จำjam, to remember: จำได้ขึ้นใจjam dâi kûen-jai is knowing something by heart, a phone number, a song, the way home. Learning by saying something over and over, as children do with their times tables, is ท่องจำtâwng-jam, and simply remembering is จำได้jam dâi.

Other spellings you'll see

There's no single official way to write Thai in English letters. We mark the tone of every syllable; online you'll also find:

  • khuen jai
  • keun jai
  • kheun jai

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More work and study in Thai

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Written by the Learn Thai For Free team
Audio: AI voices, quality-checked for tones