What does 当て字 mean?
当て字 is a Japanese noun meaning “phonetic-equivalent character, substitute character” in English. It is written as 当て字 in kanji, あてじ in hiragana, and ateji in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
本当にお久しぶりです。
It's been a long time.