牢固 láo gù 🔊 firm HSK 7–9 + Review this word Meanings láo gù firmsecure Its characters 牢láopen; fold (for livestock)HSK 6固gùhard In sentences Pinyin 绳子shéng zi不够bù gòu牢固láo gù，撑chēng不住bù zhù他tā。The rope wasn't strong enough to support him. #813587