铁定 tiědìng ironclad Origin Definitions Defs Strokes Stroke Words Sentences Sents tiědìng ironclad 铁 鐵 tiě unshakeable certain; unalterable; beyond doubt定 dìng particleverb fixed (bound form) stable; settled; already agreed upon or established by ruletiědìng definitely 铁 鐵 tiě unshakeable certain; unalterable; beyond doubt定 dìng adverbauxiliary surely surely; certainly; definitely