Etymology

~

Today it means: Written on a letter, usually a vowel, in place of an omitted n or m. Full definition →

Japanese ~
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The story

  1. Japanese · borrowed from~
  2. English today~

(indicating emotion): Perhaps borrowed from Japanese ~, 〜, 〰, emphatic form of ー (long vowel mark).

Etymology from Wiktionary, CC BY-SA 4.0.