What does 綻びる mean?
綻びる is a Japanese verb meaning “to come apart at the seams, to smile broadly” in English. It can also be translated as “to begin to open, to smile broadly” depending on context. It is written as 綻びる in kanji, ほころびる in hiragana, and hokorobiru in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
彼女のドレスのへりはほころびていた。
The border of her dress was torn.