shirts: In Japan shirts worn under suits are called “waishatsu.” This is because when the phrase “white shirt” was first introduced, it sounded like “waishatsu” to Japanese. sweater: The Japanese pronunciation of this word is completely different. In Japanese (apart from ‘n’) no separate consonant sounds exist. Therefore, these consonants were replaced with Japanese consonant vowel pairings. pants: The word pants used to refer to underwear. “Zubonn” was used for pants.