やけぼっくいにひがつく

焼けぼっくいに火がつく

表記・読み：焼けぼっくいに火が付く・焼け木杭に火が付く・焼け棒杭に火が付く・焼け木杭に火がつく・焼け棒杭に火がつく・やけぼっくいにひがつく

1. 1

   the embers of a former relationship flare up again; old love blazes anew

   expressions (phrases, clauses, etc.)五段動詞（く）idiomatic expression