Britannica
Sources used in this answer
How are English loanwords changed when they are written in Japanese katakana?
Created from Britannica articles
using AI.
AI can make mistakes, so verify using Britannica articles.
Japanese language
Record of a haiku exchange on kaishi writing paper by Japanese poet Bashō and one of his pupils in the teacher's own handwriting, 17th century, from a hanging scroll (ink on paper).
When English loanwords are transcribed into katakana, they are phonologically adapted to conform to the rules of Japanese syllabification. Because Japanese syllables must end in a vowel, the consonant n, or a geminate consonant, the transcription process often involves the following adjustments:12
- Vowel Insertion: To satisfy Japanese syllable structure, vowels are frequently inserted or appended to words. For example, the English word "ballpoint pen" becomes bōrupen and "ice cream" becomes aisukurīmu.1
- Phonological Japanization: Foreign loans undergo systematic adjustments to match Japanese phonemes. This includes processes like palatalization and affrication, where sounds change based on the following vowel. For instance, "tool" becomes tsūru, "ticket" becomes chiketto, and "single" becomes shinguru.3
- Consonantal Adjustments: While most foreign words are fully adapted, some sounds are treated differently. For example, although initial p is generally absent in native Japanese vocabulary, it is often left intact in loanwords.2
These adaptations ensure that foreign terms align with the phonetic constraints of the Japanese language.12