Read Edit View history 板上钉钉 bǎnshàngdìngdīng final Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 板上钉钉/板上釘釘 · bǎnshàngdìngdīng · final 2026/03/04 板上钉钉 / 板上釘釘 bǎnshàngdìngdīng final settled or unalterable; something that is certain or cannot be changed 既然合同已经签了，这件事就是板上钉钉的事了。 idiom created sense Mar 4, 2026, 02:25 AM